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Scientific Lead Number Lead Position Lead Characteristics Lead Characteristics with Glossary Line result key id Line result taxon id result text
Dendrolycopodium
Leaves of the main vertical axis spreading (30-90° angle to stem) in the vicinity of the lower lateral branches, prickly to the touch; branchlets round in cross-section, the 6 ranks of leaves (2 lateral ranks, 2 adaxial ranks, and 2 abaxial ranks) equal in length and spreading to ascending
Leaves of the main vertical axis spreading (30-90° angle to stem) in the vicinity of the lower lateral branches, prickly to the touch; branchlets round in cross-section, the 6 ranks of leaves (2 lateral ranks, 2 adaxial ranks, and 2 abaxial ranks) equal in length and spreading to ascending
Dendrolycopodium
Leaves of the main vertical axis spreading (30-90° angle to stem) in the vicinity of the lower lateral branches, prickly to the touch; branchlets round in cross-section, the 6 ranks of leaves (2 lateral ranks, 2 adaxial ranks, and 2 abaxial ranks) equal in length and spreading to ascending
Leaves of the main vertical axis spreading (30-90° angle to stem) in the vicinity of the lower lateral branches, prickly to the touch; branchlets round in cross-section, the 6 ranks of leaves (2 lateral ranks, 2 adaxial ranks, and 2 abaxial ranks) equal in length and spreading to ascending
Dendrolycopodium
Leaves of the main vertical axis appressed (15-30° angle to stem) in the vicinity of the lower lateral branches, soft to the touch; branchlets slightly to strongly dorsiventrally flattened in cross-section, the 6 ranks of leaves (4 lateral ranks, 1 adaxial rank, 1 abaxial rank) round or slightly to very unequal, the abaxial leaves more appressed and mostly shorter than (to equal to) the spreading lateral leaves.
Leaves of the main vertical axis appressed (15-30° angle to stem) in the vicinity of the lower lateral branches, soft to the touch; branchlets slightly to strongly dorsiventrally flattened in cross-section, the 6 ranks of leaves (4 lateral ranks, 1 adaxial rank, 1 abaxial rank) round or slightly to very unequal, the abaxial leaves more appressed and mostly shorter than (to equal to) the spreading lateral leaves.
Dendrolycopodium
Abaxial leaves of the horizontal branchlets about the same length as the lateral leaves; leaves of all the ranks spreading at a (21°-) ca. 27° (-36°) angle from the branchlet, thus the branchlet and leaves together 3.5-6 (-7) mm wide
Abaxial leaves of the horizontal branchlets about the same length as the lateral leaves; leaves of all the ranks spreading at a (21°-) ca. 27° (-36°) angle from the branchlet, thus the branchlet and leaves together 3.5-6 (-7) mm wide
Dendrolycopodium
Abaxial leaves of the horizontal branchlets about the same length as the lateral leaves; leaves of all the ranks spreading at a (21°-) ca. 27° (-36°) angle from the branchlet, thus the branchlet and leaves together 3.5-6 (-7) mm wide
Abaxial leaves of the horizontal branchlets about the same length as the lateral leaves; leaves of all the ranks spreading at a (21°-) ca. 27° (-36°) angle from the branchlet, thus the branchlet and leaves together 3.5-6 (-7) mm wide
Dendrolycopodium
Abaxial leaves of the horizontal branchlets about one half to two thirds as long as the lateral leaves; leaves of the abaxial and adaxial ranks generally appressed to the branchlet, the lateral 4 ranks spreading at a (27°-) ca. 40° (-59°) angle from the branchlet, thus the branchlet and leaves together ca. 6-9 mm wide
Abaxial leaves of the horizontal branchlets about one half to two thirds as long as the lateral leaves; leaves of the abaxial and adaxial ranks generally appressed to the branchlet, the lateral 4 ranks spreading at a (27°-) ca. 40° (-59°) angle from the branchlet, thus the branchlet and leaves together ca. 6-9 mm wide
Dendrolycopodium
Abaxial leaves of the horizontal branchlets about one half to two thirds as long as the lateral leaves; leaves of the abaxial and adaxial ranks generally appressed to the branchlet, the lateral 4 ranks spreading at a (27°-) ca. 40° (-59°) angle from the branchlet, thus the branchlet and leaves together ca. 6-9 mm wide
Abaxial leaves of the horizontal branchlets about one half to two thirds as long as the lateral leaves; leaves of the abaxial and adaxial ranks generally appressed to the branchlet, the lateral 4 ranks spreading at a (27°-) ca. 40° (-59°) angle from the branchlet, thus the branchlet and leaves together ca. 6-9 mm wide
Diphasiastrum
Foliage green or yellow-green, not bluish; sterile branchlets 2-4 mm wide (including the leaves); sterile branchlets either with or without conspicuous annual constrictions; rhizomes 0-1 cm deep (which can be determined by pulling up a single upright shoot – the depth to rhizome is approximately the length of the white portion of the vertical stem); abaxial rank of leaves on horizontal branchlets shorter than the lateral ranks (thus the branchlets flattened in cross-section).
Foliage green or yellow-green, not bluish; sterile branchlets 2-4 mm wide (including the leaves); sterile branchlets either with or without conspicuous annual constrictions; rhizomes 0-1 cm deep (which can be determined by pulling up a single upright shoot – the depth to rhizome is approximately the length of the white portion of the vertical stem); abaxial rank of leaves on horizontal branchlets shorter than the lateral ranks (thus the branchlets flattened in cross-section).
Diphasiastrum
Foliage blue-green; horizontal branchlets 1-2 mm wide (including the leaves); branchlets with conspicuous annual constrictions; rhizomes (1-) 5-12 cm deep; abaxial rank of leaves on horizontal branchlets as long as the lateral ranks (thus the branchlets more-or-less square in cross-section)
Foliage blue-green; horizontal branchlets 1-2 mm wide (including the leaves); branchlets with conspicuous annual constrictions; rhizomes (1-) 5-12 cm deep; abaxial rank of leaves on horizontal branchlets as long as the lateral ranks (thus the branchlets more-or-less square in cross-section)
Diphasiastrum
Foliage blue-green; horizontal branchlets 1-2 mm wide (including the leaves); branchlets with conspicuous annual constrictions; rhizomes (1-) 5-12 cm deep; abaxial rank of leaves on horizontal branchlets as long as the lateral ranks (thus the branchlets more-or-less square in cross-section)
Foliage blue-green; horizontal branchlets 1-2 mm wide (including the leaves); branchlets with conspicuous annual constrictions; rhizomes (1-) 5-12 cm deep; abaxial rank of leaves on horizontal branchlets as long as the lateral ranks (thus the branchlets more-or-less square in cross-section)
Sagittaria
Abaxial wing of fruit scalloped or toothed; [n. AL and nw. GA]
Abaxial wing of fruit scalloped or toothed; [n. AL and nw. GA]
Sagittaria
Abaxial wing of fruit entire; [collectively widespread].
Abaxial wing of fruit entire; [collectively widespread].
Poaceae
Leaves 4-10 mm wide, the base twisted so that the abaxial surface is uppermost; awns 7-15 mm long
Leaves 4-10 mm wide, the base twisted so that the abaxial surface is uppermost; awns 7-15 mm long
Dichanthelium
Blades stiff, often longitudinally ribbed, at least the lower villous or strongly pilose on the abaxial surface, and pilose to hirsute on the adaxial surface, at least proximally.
Blades stiff, often longitudinally ribbed, at least the lower villous or strongly pilose on the abaxial surface, and pilose to hirsute on the adaxial surface, at least proximally.
Dichanthelium
Sheaths and internodes of vernal culms gray-villous with a dense, tangled, or matted mixture of slender hairs 2-4 mm long, variously ascending, spreading, and retrorse, papillose or non-papillose, often with shorter hairs beneath; leaf blades velvety-pubescent on abaxial surface, the margins ciliate (or appearing ciliate) for half or more their length.
Sheaths and internodes of vernal culms gray-villous with a dense, tangled, or matted mixture of slender hairs 2-4 mm long, variously ascending, spreading, and retrorse, papillose or non-papillose, often with shorter hairs beneath; leaf blades velvety-pubescent on abaxial surface, the margins ciliate (or appearing ciliate) for half or more their length.
Hamamelis
Inner (upper, abaxial) surface of calyx scarlet; petals red or reddish (often yellow-tipped, or rarely completely yellow), flowering late Dec to Apr; leaves 7-24 cm long, 4-17 cm wide; leaf lateral veins 9, 10, or 11 (5 on one side of the leaf, 4, 5, or 6 on the other); [Gulf Coast of GA to TX, Interior Highlands of MO, AR, and OK].
Inner (upper, abaxial) surface of calyx scarlet; petals red or reddish (often yellow-tipped, or rarely completely yellow), flowering late Dec to Apr; leaves 7-24 cm long, 4-17 cm wide; leaf lateral veins 9, 10, or 11 (5 on one side of the leaf, 4, 5, or 6 on the other); [Gulf Coast of GA to TX, Interior Highlands of MO, AR, and OK].
Hamamelis
Inner (upper, abaxial) surface of calyx yellow; petals 7-20 mm long, yellow, flowering Oct-Jan; leaves 3.7-16.7 cm long, 2.5-13 cm wide; leaf lateral veins 9 or 10 (5 on one side of the leaf, 4-5 on the other); [plants collectively widespread in our area].
Inner (upper, abaxial) surface of calyx yellow; petals 7-20 mm long, yellow, flowering Oct-Jan; leaves 3.7-16.7 cm long, 2.5-13 cm wide; leaf lateral veins 9 or 10 (5 on one side of the leaf, 4-5 on the other); [plants collectively widespread in our area].
Rosa
Stipules 10-16 (-20) mm × 3-4 mm, margins densely glandular-ciliate; leaflet blades 15-30 (-60) mm × 8-22 (-50) mm, abaxial surfaces tomentose; glands of the leaves resin-scented; bracts persistent, tomentose, margins ciliate-glandular; pedicels (11-) 20-35 mm long, densely stipitate-glandular; flowers 3.5-5 cm in diameter; hips dark red, 10-15 mm × 10-12 mm, sepals caducous before hips mature
Stipules 10-16 (-20) mm × 3-4 mm, margins densely glandular-ciliate; leaflet blades 15-30 (-60) mm × 8-22 (-50) mm, abaxial surfaces tomentose; glands of the leaves resin-scented; bracts persistent, tomentose, margins ciliate-glandular; pedicels (11-) 20-35 mm long, densely stipitate-glandular; flowers 3.5-5 cm in diameter; hips dark red, 10-15 mm × 10-12 mm, sepals caducous before hips mature
Rosa
Stipules 6-10 mm × 2-4 mm, margins mostly stipitate-glandular; leaflet blades 10-22 mm × 8-15 mm, abaxial surfaces glabrous or pubescent; glands of the leaves apple-scented; bracts caducous, glabrous, margins stipitate-glandular; pedicels 6-9 mm long, densely stipitate- or setose-glandular; flowers 2.5-4 cm in diameter; hips red, 10-25 mm × 10-22 mm, sepals subpersistent.
Stipules 6-10 mm × 2-4 mm, margins mostly stipitate-glandular; leaflet blades 10-22 mm × 8-15 mm, abaxial surfaces glabrous or pubescent; glands of the leaves apple-scented; bracts caducous, glabrous, margins stipitate-glandular; pedicels 6-9 mm long, densely stipitate- or setose-glandular; flowers 2.5-4 cm in diameter; hips red, 10-25 mm × 10-22 mm, sepals subpersistent.
Oxalis
Abaxial leaf surface sparsely but evenly strigose with fine hairs; leaflet margins glabrous to sparsely irregularly ciliate with loose, fine hairs; outer bulb scales 5-8 (-13)-nerved; sepal apices without orange tubercles; aerial propagules sometimes produced at bracteole region of scape
Abaxial leaf surface sparsely but evenly strigose with fine hairs; leaflet margins glabrous to sparsely irregularly ciliate with loose, fine hairs; outer bulb scales 5-8 (-13)-nerved; sepal apices without orange tubercles; aerial propagules sometimes produced at bracteole region of scape
Oxalis
Abaxial leaf surface strongly strigose to hirsute-strigose; leaflet margins prominently ciliate with stiff, sharp-pointed hairs; outer bulb scales 3- (-5)-nerved; sepal apices with a pair of elongate orange tubercles; aerial propagules never produced
Abaxial leaf surface strongly strigose to hirsute-strigose; leaflet margins prominently ciliate with stiff, sharp-pointed hairs; outer bulb scales 3- (-5)-nerved; sepal apices with a pair of elongate orange tubercles; aerial propagules never produced
Salix
Leaf blades (4-) 7-10 (-16)× as long as wide; leaf abaxial surface glaucous (S. caroliniana) or not (S. nigra); floral bracts deciduous after flowering; plants trees [section Humboldtianae].
Leaf blades (4-) 7-10 (-16)× as long as wide; leaf abaxial surface glaucous (S. caroliniana) or not (S. nigra); floral bracts deciduous after flowering; plants trees [section Humboldtianae].
Salix
Abaxial leaf surface silky or pilose; branchlets densely short-silky-tomentose to short-villous; leaf margins usually entire; plants to 17 m tall
Abaxial leaf surface silky or pilose; branchlets densely short-silky-tomentose to short-villous; leaf margins usually entire; plants to 17 m tall
Salix
Abaxial surface glabrous, glabrescent, densely villous, or long- or short-silky; branchlets tomentose or pubescent to glabrescent; leaf margins usually spinulose-serrulate; plants to 10 m tall
Abaxial surface glabrous, glabrescent, densely villous, or long- or short-silky; branchlets tomentose or pubescent to glabrescent; leaf margins usually spinulose-serrulate; plants to 10 m tall
Rhexia
Petals lavender-rose, (1-) 1.5-2.7 cm long; mature hypanthium 10-14 mm long, with glandular hairs; marginal nerves of leaf abaxial surface either absent or obscure and discontinuous; anthers 7-10 mm long
Petals lavender-rose, (1-) 1.5-2.7 cm long; mature hypanthium 10-14 mm long, with glandular hairs; marginal nerves of leaf abaxial surface either absent or obscure and discontinuous; anthers 7-10 mm long
Rhexia
Petals white to pink (-rose-purple), (7-) 0.9-1.4 cm long; mature hypanthium 6-10 mm long, glabrous or sparsely glandular-hairy; marginal nerves of leaf abaxial surface prominent; anthers 5-8 mm long
Petals white to pink (-rose-purple), (7-) 0.9-1.4 cm long; mature hypanthium 6-10 mm long, glabrous or sparsely glandular-hairy; marginal nerves of leaf abaxial surface prominent; anthers 5-8 mm long
Rutaceae
Hesperidia bluish black when ripe, 0.8-1.2 cm in diameter; stamens 10; petiole not winged; stems armed; abaxial leaf surface with raised lateral veins; petals < 0.5 cm long
Hesperidia bluish black when ripe, 0.8-1.2 cm in diameter; stamens 10; petiole not winged; stems armed; abaxial leaf surface with raised lateral veins; petals < 0.5 cm long
Rutaceae
Hesperidia green, yellow, or orange when ripe, > 1.5 cm in diameter; stamens 20+; petiole usually winged; stems armed or unarmed; abaxial leaf surface without raised lateral veins; petals > 1 cm long
Hesperidia green, yellow, or orange when ripe, > 1.5 cm in diameter; stamens 20+; petiole usually winged; stems armed or unarmed; abaxial leaf surface without raised lateral veins; petals > 1 cm long
Opuntia
Erect shrubs or small trees; spines chalky-white; cladodes dark, glossy green; tepals yellow with red abaxial midrib; stigmas white to cream; fruit clavate (widest towards the tip), often proliferous; [exotic, known from FL only in our area]
Erect shrubs or small trees; spines chalky-white; cladodes dark, glossy green; tepals yellow with red abaxial midrib; stigmas white to cream; fruit clavate (widest towards the tip), often proliferous; [exotic, known from FL only in our area]
Rhododendron
Outer (abaxial) surface of the vegetative bud scales densely pubescent; flowers appearing before or with the leaves (at least some of the leaves still folded or the vegetative bud scales still present) (except R. viscosum).
Outer (abaxial) surface of the vegetative bud scales densely pubescent; flowers appearing before or with the leaves (at least some of the leaves still folded or the vegetative bud scales still present) (except R. viscosum).
Rhododendron
Outer (abaxial) surface of the vegetative bud scales glabrous or sparsely pubescent; flowers appearing before, with, or after the leaves.
Outer (abaxial) surface of the vegetative bud scales glabrous or sparsely pubescent; flowers appearing before, with, or after the leaves.
Rubiaceae
Inflorescences thyrsoid; calyx lobes inconspicuous; leaves evergreen; domatia present or absent in secondary abaxial vein axils; [of ne. FL southward].
Inflorescences thyrsoid; calyx lobes inconspicuous; leaves evergreen; domatia present or absent in secondary abaxial vein axils; [of ne. FL southward].
Asclepias
Hood margin irregular but not with a sharp tooth; umbels terminal and extra-axillary; corolla purplish-rose; leaves with 1-2 stipular colleters on each side of petioles, abaxial surfaces sparsely pilosulous; plants 4-10 dm tall
Hood margin irregular but not with a sharp tooth; umbels terminal and extra-axillary; corolla purplish-rose; leaves with 1-2 stipular colleters on each side of petioles, abaxial surfaces sparsely pilosulous; plants 4-10 dm tall
Asclepias
Hood margin with a single, ascending, triangular tooth; ; leaves with 1-5 stipular colleters on each side of petioles, abaxial surfaces tomentose to glabrate; corolla rose or greenish-white; plants (5-) 8-20 dm tall
Hood margin with a single, ascending, triangular tooth; ; leaves with 1-5 stipular colleters on each side of petioles, abaxial surfaces tomentose to glabrate; corolla rose or greenish-white; plants (5-) 8-20 dm tall
Datura
Corolla limbs with 5 acuminate lobes +/- equal to 5 lobules; calyces villous-pubescent (especially along veins); abaxial leaf surface villous-pubescent (especially along veins), trichomes spreading
Corolla limbs with 5 acuminate lobes +/- equal to 5 lobules; calyces villous-pubescent (especially along veins); abaxial leaf surface villous-pubescent (especially along veins), trichomes spreading
Datura
Corolla limbs with 5 acuminate lobes longer than the 5 lobules; calyces canescent-puberulent (especially along veins); abaxial leaf surface canescent-puberulent (especially along veins), trichomes short-appressed or curved
Corolla limbs with 5 acuminate lobes longer than the 5 lobules; calyces canescent-puberulent (especially along veins); abaxial leaf surface canescent-puberulent (especially along veins), trichomes short-appressed or curved
Ligustrum
Leaves mostly (3-) 4-8 (-9) cm long, with the primary lateral leaf veins in 3-5 pairs; leaf apex acute to abruptly acuminate; abaxial midvein covered by epidermis; flowers short-pedicellate on pedicels 0.5-2 mm; corolla tube hardly exserted from calyx, ca. equal lobe length
Leaves mostly (3-) 4-8 (-9) cm long, with the primary lateral leaf veins in 3-5 pairs; leaf apex acute to abruptly acuminate; abaxial midvein covered by epidermis; flowers short-pedicellate on pedicels 0.5-2 mm; corolla tube hardly exserted from calyx, ca. equal lobe length
Ligustrum
Leaves (4.5-) 6-13 (-15) cm, with the primary lateral veins in (5-) 6-8 pairs; leaf apex usually long-acuminate; abaxial midvein not covered by epidermis; flowers subsessile on pedicels 0-0.5 mm; corolla tube distinctly exserted from calyx, ca. 2× longer than lobes
Leaves (4.5-) 6-13 (-15) cm, with the primary lateral veins in (5-) 6-8 pairs; leaf apex usually long-acuminate; abaxial midvein not covered by epidermis; flowers subsessile on pedicels 0-0.5 mm; corolla tube distinctly exserted from calyx, ca. 2× longer than lobes
Ligustrum
Leaf blades glabrous on both surfaces or sometimes sparsely hairy along the abaxial midvein, primary lateral veins (2-) 3-6 pairs, apices obtuse to acute (in L. vulgare) or obtuse to rounded.
Leaf blades glabrous on both surfaces or sometimes sparsely hairy along the abaxial midvein, primary lateral veins (2-) 3-6 pairs, apices obtuse to acute (in L. vulgare) or obtuse to rounded.
Ligustrum
Leaves ovate-elliptic to oblong-ovate, elliptic-lanceolate, or suborbicular, primary lateral veins (3-) 4-5 pairs, apex obtuse to rounded or retuse, abaxial midvein usually sparsely hirsutulous to puberulent; inflorescence diffuse and open panicles terminal and on essentially leafless, lateral branches interspersed with leafy ones; branchlets hirtellous to loosely substrigose with straight hairs of uneven length; corolla tube slightly shorter than lobes, often barely exserted from the calyx tube; pedicels glabrous
Leaves ovate-elliptic to oblong-ovate, elliptic-lanceolate, or suborbicular, primary lateral veins (3-) 4-5 pairs, apex obtuse to rounded or retuse, abaxial midvein usually sparsely hirsutulous to puberulent; inflorescence diffuse and open panicles terminal and on essentially leafless, lateral branches interspersed with leafy ones; branchlets hirtellous to loosely substrigose with straight hairs of uneven length; corolla tube slightly shorter than lobes, often barely exserted from the calyx tube; pedicels glabrous
Ligustrum
Leaves elliptic-lanceolate to elliptic-ovate, primary lateral veins 4-6 pairs, apex obtuse to acute, abaxial midvein usually glabrous or with a few scattered hairs; inflorescence mostly a compact, terminal panicle; branchlets evenly and minutely hirtellous to hirsutulous with relatively even-length hairs; corolla tube equal the lobes or slightly shorter, distinctly exserted from the calyx tube; pedicels hirtellous
Leaves elliptic-lanceolate to elliptic-ovate, primary lateral veins 4-6 pairs, apex obtuse to acute, abaxial midvein usually glabrous or with a few scattered hairs; inflorescence mostly a compact, terminal panicle; branchlets evenly and minutely hirtellous to hirsutulous with relatively even-length hairs; corolla tube equal the lobes or slightly shorter, distinctly exserted from the calyx tube; pedicels hirtellous
Verbascum
Basal and lower stem leaves with blades basally cordate to nearly truncate; leaves sparsely tomentose to glabrate, quickly glabrescent abaxially, sometimes glabrate on both surfaces, thinly tomentose on abaxial leaf surface but not completely obscuring epidermis; all filaments villous with purple to violet hairs
Basal and lower stem leaves with blades basally cordate to nearly truncate; leaves sparsely tomentose to glabrate, quickly glabrescent abaxially, sometimes glabrate on both surfaces, thinly tomentose on abaxial leaf surface but not completely obscuring epidermis; all filaments villous with purple to violet hairs
Hygrophila
Corolla purplish with white or yellow markings on the lower lip, (10-) 12-17 mm long; bracteoles lance-ovate to narrowly elliptic to linear, 6-15 mm long, abaxial surface pubescent with eglandular hairs (especially along the midvein; calyx 9-14 mm long at anthesis (to 15 mm long in fruit), the lower surface pubescent with eglandular hairs to 0.6 mm long (some at least of the hairs > 0.2 mm long)
Corolla purplish with white or yellow markings on the lower lip, (10-) 12-17 mm long; bracteoles lance-ovate to narrowly elliptic to linear, 6-15 mm long, abaxial surface pubescent with eglandular hairs (especially along the midvein; calyx 9-14 mm long at anthesis (to 15 mm long in fruit), the lower surface pubescent with eglandular hairs to 0.6 mm long (some at least of the hairs > 0.2 mm long)
Hygrophila
Corolla entirely white, 5.5-9 mm long; bracteoles subulate to lanceolate to linear, 2.2-5.5 (-7) mm long, the abaxial surface glabrous; calyx 5-7 mm long during anthesis (to 9 mm long in fruit), the lower surface glabrous or pubescent with hairs < 0.2 mm long
Corolla entirely white, 5.5-9 mm long; bracteoles subulate to lanceolate to linear, 2.2-5.5 (-7) mm long, the abaxial surface glabrous; calyx 5-7 mm long during anthesis (to 9 mm long in fruit), the lower surface glabrous or pubescent with hairs < 0.2 mm long
Stachys
Petioles of midstem leaves 10 mm long (or more); calyx lobes deltoid-lanceolate; stem and abaxial leaf surface sparingly to moderately glandular and with frequent soft eglandular hairs; [GA, TN, KY]
Petioles of midstem leaves 10 mm long (or more); calyx lobes deltoid-lanceolate; stem and abaxial leaf surface sparingly to moderately glandular and with frequent soft eglandular hairs; [GA, TN, KY]
Stachys
Petioles of midstem leaves to 6 mm long; calyx lobes strongly deltoid; stem and abaxial leaf surface abundantly to densely atomiferous glandular and with some stiff eglandular hairs.
Petioles of midstem leaves to 6 mm long; calyx lobes strongly deltoid; stem and abaxial leaf surface abundantly to densely atomiferous glandular and with some stiff eglandular hairs.
Carduus
Abaxial leaf blade surface with only curling, septate hairs; involucres 14-20 mm tall; disk corollas 13-20 mm long
Abaxial leaf blade surface with only curling, septate hairs; involucres 14-20 mm tall; disk corollas 13-20 mm long
Carduus
Abaxial leaf blade surface with dimorphic hairs (longer, curling septate hairs on the veins and sparse to dense tomentum across the surface); involucres 12-17 mm tall; disk corollas 11-16 mm long
Abaxial leaf blade surface with dimorphic hairs (longer, curling septate hairs on the veins and sparse to dense tomentum across the surface); involucres 12-17 mm tall; disk corollas 11-16 mm long
Gamochaeta
Leaves concolored or weakly bicolored (abaxial and adaxial faces more or less equally greenish to gray-greenish, indument usually loosely tomentose or arachnose, sometimes subpannose).
Leaves concolored or weakly bicolored (abaxial and adaxial faces more or less equally greenish to gray-greenish, indument usually loosely tomentose or arachnose, sometimes subpannose).
Helianthus
Trichomes on the leaf abaxial midrib > 1 mm long; lower stem with a few pairs of leaves (< 8 nodes below the capitulescence), these strongly reduced upward; leaf blades (1.3-) 1.7-2.5 (-3)× as long as wide; petiole often > 1/3 as long as the blade, broadly winged toward the blade; plants to 2 m tall; nonflowering stems usually absent; [widespread in our area]
Trichomes on the leaf abaxial midrib > 1 mm long; lower stem with a few pairs of leaves (< 8 nodes below the capitulescence), these strongly reduced upward; leaf blades (1.3-) 1.7-2.5 (-3)× as long as wide; petiole often > 1/3 as long as the blade, broadly winged toward the blade; plants to 2 m tall; nonflowering stems usually absent; [widespread in our area]
Helianthus
Trichomes on the leaf abaxial midrib < 1 mm long; lower stem leafy, often to above the middle (> 8 nodes below the capitulescence); leaf blades 1-1.7 (-2)× as long as wide; petiole usually < 1/3 as long as the blade, narrowly winged toward the blade; plants to 3 m tall; nonflowering stems usually present; [west of our area]
Trichomes on the leaf abaxial midrib < 1 mm long; lower stem leafy, often to above the middle (> 8 nodes below the capitulescence); leaf blades 1-1.7 (-2)× as long as wide; petiole usually < 1/3 as long as the blade, narrowly winged toward the blade; plants to 3 m tall; nonflowering stems usually present; [west of our area]
Helianthus
Abaxial surfaces of leaves and ligules lacking subsessile glandular trichomes; leaves usually broadly ovate to orbicular and with a petiole > 1 cm long
Abaxial surfaces of leaves and ligules lacking subsessile glandular trichomes; leaves usually broadly ovate to orbicular and with a petiole > 1 cm long
Helianthus
Abaxial surfaces of leaves and ligules with subsessile glandular trichomes; leaves usually lanceolate to lance-ovate or rhombic-ovate and with a petiole usually < 1 cm long.
Abaxial surfaces of leaves and ligules with subsessile glandular trichomes; leaves usually lanceolate to lance-ovate or rhombic-ovate and with a petiole usually < 1 cm long.
Helianthus
Heads relatively small, the disc portion of the heads usually < 15 mm across; abaxial leaf surfaces softly pubescent (on living plants, except the leaf margins and midveins which are scabrous); tubers present; [of the NC and SC piedmont]
Heads relatively small, the disc portion of the heads usually < 15 mm across; abaxial leaf surfaces softly pubescent (on living plants, except the leaf margins and midveins which are scabrous); tubers present; [of the NC and SC piedmont]
Helianthus
Heads various in size (8-20 mm+); abaxial leaf surfaces various, but not softly pubescent; tubers absent; [collectively widespread].
Heads various in size (8-20 mm+); abaxial leaf surfaces various, but not softly pubescent; tubers absent; [collectively widespread].
Ptilimnium
Styles (on the fruit) 0.1-0.2 mm long, erect-ascending to spreading; calyx teeth < 0.2 mm long, deltoid; middle and upper stem leaves with petioles usually papillate on the lower (abaxial) surface.
Styles (on the fruit) 0.1-0.2 mm long, erect-ascending to spreading; calyx teeth < 0.2 mm long, deltoid; middle and upper stem leaves with petioles usually papillate on the lower (abaxial) surface.
Ptilimnium
Styles (on the fruit) (0.3-) 0.4-2.0 mm long, spreading to strongly recurved; calyx teeth > 0.2 mm long, narrowly triangular; middle and upper stem leaves with petioles not papillate on the lower (abaxial) surface.
Styles (on the fruit) (0.3-) 0.4-2.0 mm long, spreading to strongly recurved; calyx teeth > 0.2 mm long, narrowly triangular; middle and upper stem leaves with petioles not papillate on the lower (abaxial) surface.
Plantae
Leaves glabrous, or if hairy, the hairs strictly simple (sometimes also bearing a few conspicuous apical, marginal or abaxial pit domatia in COMBRETACEAE).
Leaves glabrous, or if hairy, the hairs strictly simple (sometimes also bearing a few conspicuous apical, marginal or abaxial pit domatia in COMBRETACEAE).
Plantae
Inflorescences axillary; flowers pink; leaves thin and herbaceous, with prominent secondary veins arching parallel with the margin, also with branching hairs on the abaxial leaf midvein; plants with arching stems, these often tip-rooting; [native plants of wetlands]
Inflorescences axillary; flowers pink; leaves thin and herbaceous, with prominent secondary veins arching parallel with the margin, also with branching hairs on the abaxial leaf midvein; plants with arching stems, these often tip-rooting; [native plants of wetlands]
Plantae
Leaves equitant (the leaves distichous, in a fan-like array, e.g. Iris, each leaf clasping the next above in a basal fold, this uniting above so that the main leaf blade, above the basal fold, has only the lower [abaxial] leaf surface visible because of fusion of the ‘upper’ surfaces).
Leaves equitant (the leaves distichous, in a fan-like array, e.g. Iris, each leaf clasping the next above in a basal fold, this uniting above so that the main leaf blade, above the basal fold, has only the lower [abaxial] leaf surface visible because of fusion of the ‘upper’ surfaces).
Plantae
Flowers axillary, sessile or nearly so, solitary or a few; petaloid sepals widely spreading, separate, usually with a subapical abaxial appendage; leaves linear to oblanceolate; stamens 5 or 30-50
Flowers axillary, sessile or nearly so, solitary or a few; petaloid sepals widely spreading, separate, usually with a subapical abaxial appendage; leaves linear to oblanceolate; stamens 5 or 30-50
Plantae
Flowers in terminal cymose panicles; petaloid sepals connate into a narrow tube (reminiscent of the corolla of Ipomoea), lacking subapical abaxial appendages; leaves lanceolate, elliptic, ovate, or broadly ovate; stamens 3 or 5
Flowers in terminal cymose panicles; petaloid sepals connate into a narrow tube (reminiscent of the corolla of Ipomoea), lacking subapical abaxial appendages; leaves lanceolate, elliptic, ovate, or broadly ovate; stamens 3 or 5
Amsonia
Leaves ovate lanceolate, 9-11 × 2-4 cm; abaxial leaf surface > 50% obscured by dense pubescence, hoary; trichomes uniform in length and orientation; leaf margin with longer trichomes; corolla tube 6-10 mm long, petal lobes 4.3-7.2 mm long, margins entire; follicles pubescent; [s. MS west to w. LA]
Leaves ovate lanceolate, 9-11 × 2-4 cm; abaxial leaf surface > 50% obscured by dense pubescence, hoary; trichomes uniform in length and orientation; leaf margin with longer trichomes; corolla tube 6-10 mm long, petal lobes 4.3-7.2 mm long, margins entire; follicles pubescent; [s. MS west to w. LA]
Amsonia
Leaves elliptic ovate, 3-5 × 0.8-1.5 cm; abaxial leaf surface < 50% obscured by dense pubescence, grey-green; trichomes of different lengths, some appressed and curled; leaf margin scabrellous with short hispid trichomes; corolla tube 5.5-8 mm long, petal lobes 4.8-6 mm long, margins undulate; follicles glabrate (glabrous?); [c. GA]
Leaves elliptic ovate, 3-5 × 0.8-1.5 cm; abaxial leaf surface < 50% obscured by dense pubescence, grey-green; trichomes of different lengths, some appressed and curled; leaf margin scabrellous with short hispid trichomes; corolla tube 5.5-8 mm long, petal lobes 4.8-6 mm long, margins undulate; follicles glabrate (glabrous?); [c. GA]
Carex
Proximal bracts with bases of blades white between veins (most easily seen on abaxial surface)
Proximal bracts with bases of blades white between veins (most easily seen on abaxial surface)
Persicaria
Leaves rhombic, bases cuneate, apices acute, adaxial and abaxial surfaces glabrous, purple blotch absent or faint, marginal bristles 0.1-0.3 mm long; inflorescences dense, fascicles congested (interrupted basally); pedicels included; proximal bracteole bristles surpassing the adjacent flowers; tepals dark pink, closed at anthesis; achenes < 2 mm long
Leaves rhombic, bases cuneate, apices acute, adaxial and abaxial surfaces glabrous, purple blotch absent or faint, marginal bristles 0.1-0.3 mm long; inflorescences dense, fascicles congested (interrupted basally); pedicels included; proximal bracteole bristles surpassing the adjacent flowers; tepals dark pink, closed at anthesis; achenes < 2 mm long
Persicaria
Leaves elliptic, bases rounded and abruptly cuneate to the petiole, apices caudate, adaxial and abaxial surfaces strigose, purple lunate blotch conspicuous and present at maturity, marginal bristles 0.5 mm long; inflorescences lax, fascicles remote; pedicels exserted; proximal bracteole bristles scarcely reaching the base of the tepals; tepals pale pink to white, open at anthesis; achenes > 2 mm long
Leaves elliptic, bases rounded and abruptly cuneate to the petiole, apices caudate, adaxial and abaxial surfaces strigose, purple lunate blotch conspicuous and present at maturity, marginal bristles 0.5 mm long; inflorescences lax, fascicles remote; pedicels exserted; proximal bracteole bristles scarcely reaching the base of the tepals; tepals pale pink to white, open at anthesis; achenes > 2 mm long
Nartheciaceae
Leaves in a basal rosette, spirally arranged and radiating out from the stem base; tepals fused nearly to apex, white to yellow, farinose and glutinous on abaxial surface; septal nectaries present
Leaves in a basal rosette, spirally arranged and radiating out from the stem base; tepals fused nearly to apex, white to yellow, farinose and glutinous on abaxial surface; septal nectaries present
Nartheciaceae
Leaves equitant, unifacial (laterally flattened, iris-like), ascending; tepals distinct (sometimes barely united basally), yellow, glabrous or tomentose on abaxial surface; septal nectaries not present.
Leaves equitant, unifacial (laterally flattened, iris-like), ascending; tepals distinct (sometimes barely united basally), yellow, glabrous or tomentose on abaxial surface; septal nectaries not present.
Froelichia
Leaf blades linear to lanceolate to oblanceolate or oblong, abaxial surface of leaves silky; [collectively widespread].
Leaf blades linear to lanceolate to oblanceolate or oblong, abaxial surface of leaves silky; [collectively widespread].
Froelichia
Leaf blades orbicular to broadly elliptic, abaxial surface of leaves densely wooly; [s. TX, principally coastal]
Leaf blades orbicular to broadly elliptic, abaxial surface of leaves densely wooly; [s. TX, principally coastal]
Swida
Bark of older branches and stems smooth, with scattered protruding lenticels; leaves with tufts of trichomes in axils of secondary veins on the abaxial surface.
Bark of older branches and stems smooth, with scattered protruding lenticels; leaves with tufts of trichomes in axils of secondary veins on the abaxial surface.
Swida
Bark of older branches and stems splitting longitudinally, appearing braided; leaves without tufts of trichomes in axils of secondary veins on abaxial surface.
Bark of older branches and stems splitting longitudinally, appearing braided; leaves without tufts of trichomes in axils of secondary veins on abaxial surface.
Swida
Abaxial leaf surface coronulate, trichomes all appressed and rigid, leaf base usually cuneate
Abaxial leaf surface coronulate, trichomes all appressed and rigid, leaf base usually cuneate
Swida
Abaxial leaf surface not coronulate, trichomes appressed and rigid, and erect and curling, on the same leaf, leaf base usually rounded or truncate
Abaxial leaf surface not coronulate, trichomes appressed and rigid, and erect and curling, on the same leaf, leaf base usually rounded or truncate
Carex
Perigynia 2.5-5.5 × 2.0-3.6 mm at largest (to 6.1 × 4.4 mm in the Florida endemic C. vexans), prominently bulged by achene only on abaxial face or flat; beak usually 0.7-1.6 (-1.8) mm long.
Perigynia 2.5-5.5 × 2.0-3.6 mm at largest (to 6.1 × 4.4 mm in the Florida endemic C. vexans), prominently bulged by achene only on abaxial face or flat; beak usually 0.7-1.6 (-1.8) mm long.
Carex
Perigynium body round-elliptic, with adaxial and abaxial surfaces pubescent, papillae concentrated mostly below the beak; [ne. North America and southern Appalachians].
Perigynium body round-elliptic, with adaxial and abaxial surfaces pubescent, papillae concentrated mostly below the beak; [ne. North America and southern Appalachians].
Carex
Perigynium body elliptic, with adaxial and abaxial surfaces lacking hairs (some often present on angles of the beak only), papillae prominent; [se. Coastal Plain]
Perigynium body elliptic, with adaxial and abaxial surfaces lacking hairs (some often present on angles of the beak only), papillae prominent; [se. Coastal Plain]
Carex
Perigynium with not more than 5 veins extending length of body on abaxial face, veinless or weakly veined on adaxial face
Perigynium with not more than 5 veins extending length of body on abaxial face, veinless or weakly veined on adaxial face
Combretaceae
Leaves opposite and decussate; flowers in spikes or racemes; leaf domatia (if present) in abaxial leaf vein axils.
Leaves opposite and decussate; flowers in spikes or racemes; leaf domatia (if present) in abaxial leaf vein axils.
Combretaceae
Leaves alternate; flowers either in heads (arrayed in axillary or terminal panicles or racemes) or in spikes; leaf domatia (if present) on leaf apex or leaf margins or abaxial leaf veins (Conocarpus).
Leaves alternate; flowers either in heads (arrayed in axillary or terminal panicles or racemes) or in spikes; leaf domatia (if present) on leaf apex or leaf margins or abaxial leaf veins (Conocarpus).
Sideroxylon
Pubescence on young twigs dense, rusty dark red-brown, often persisting well past the first season; abaxial leaf pubescence rusty red-brown, sparse to moderately dense, often giving surface a distinctly reddish hue; staminodes nearly as long as median corolla lobes; ovary densely pubescent; seed variegated; stomatal chamber openings located on raised, donut-shaped platforms
Pubescence on young twigs dense, rusty dark red-brown, often persisting well past the first season; abaxial leaf pubescence rusty red-brown, sparse to moderately dense, often giving surface a distinctly reddish hue; staminodes nearly as long as median corolla lobes; ovary densely pubescent; seed variegated; stomatal chamber openings located on raised, donut-shaped platforms
Sideroxylon
Pubescence on young twigs moderate to dense, blonde to light brown, rarely persisting past the first season; abaxial leaf pubescence blonde to light brown, sparse; staminodes only to 1/3 to 1/2 the length of the median corolla lobes; ovary glabrous or with a few trichomes medially; seed uniformly brown; stomatal chamber openings atop ellipsoidal domes neatly bordered by one or more concentric cuticular ridges
Pubescence on young twigs moderate to dense, blonde to light brown, rarely persisting past the first season; abaxial leaf pubescence blonde to light brown, sparse; staminodes only to 1/3 to 1/2 the length of the median corolla lobes; ovary glabrous or with a few trichomes medially; seed uniformly brown; stomatal chamber openings atop ellipsoidal domes neatly bordered by one or more concentric cuticular ridges
Sideroxylon
Young twigs densely pubescent, and abaxial leaf pubescence woolly; [c. FL north and west to OK, TX, and ne. Mexico].
Young twigs densely pubescent, and abaxial leaf pubescence woolly; [c. FL north and west to OK, TX, and ne. Mexico].
Sideroxylon
Young twigs glabrous or nearly so, and abaxial leaf pubescence finely wooly; s. peninsular FL]
Young twigs glabrous or nearly so, and abaxial leaf pubescence finely wooly; s. peninsular FL]
Cyperus
Spikes mostly at least 2× as long as wide, slightly (or not) narrowed to base, spikelets reflexed to spreading; culms, leaves, and bracts glabrous except for marginal prickles on leaves and bracts; rachilla wing clasping achene for its entire length (concealing it in abaxial view); floral scales golden-brown when mature
Spikes mostly at least 2× as long as wide, slightly (or not) narrowed to base, spikelets reflexed to spreading; culms, leaves, and bracts glabrous except for marginal prickles on leaves and bracts; rachilla wing clasping achene for its entire length (concealing it in abaxial view); floral scales golden-brown when mature
Cyperus
Rays glabrous or rarely with a few hairs just below the spike; leaves and bracts with hairs confined to abaxial midrib; longest ray shorter than longest bract; culm sharply trigonous; terminal scale involute but not spinose; scales (2-)3-6; spikes often loose, sometimes more elongate
Rays glabrous or rarely with a few hairs just below the spike; leaves and bracts with hairs confined to abaxial midrib; longest ray shorter than longest bract; culm sharply trigonous; terminal scale involute but not spinose; scales (2-)3-6; spikes often loose, sometimes more elongate
Araceae
Primary lateral veins and midrib of abaxial leaf surfaces without wax glands; fruits inconspicuously colored and odorous, with many small mucilaginous seeds
Primary lateral veins and midrib of abaxial leaf surfaces without wax glands; fruits inconspicuously colored and odorous, with many small mucilaginous seeds
Araceae
Primary lateral veins and midrib of abaxial leaf surfaces with wax glands; mature fruit orange or red and odorless, some containing a few large seeds
Primary lateral veins and midrib of abaxial leaf surfaces with wax glands; mature fruit orange or red and odorless, some containing a few large seeds
Silphium
Phyllary abaxial surface scabrous or glabrous; inflorescence open, with peduncles up to 13 cm long; basal leaves sometimes persisting at flowering; [Coastal Plain, SC, GA, FL, AL, and MS]
Phyllary abaxial surface scabrous or glabrous; inflorescence open, with peduncles up to 13 cm long; basal leaves sometimes persisting at flowering; [Coastal Plain, SC, GA, FL, AL, and MS]
Silphium
Phyllary abaxial surface hispid; inflorescence congested, with peduncles usually less than 4 cm long; basal leaves withered by flowering
Phyllary abaxial surface hispid; inflorescence congested, with peduncles usually less than 4 cm long; basal leaves withered by flowering
Plantae
Seeds with fleshy aril or attachment (or if not fleshy, the seeds nutlets with abaxial ridges, as in Bourreria); ovaries 2-4 carpellate; flowers rotate; leaves entire or very remotely serrulate.
Seeds with fleshy aril or attachment (or if not fleshy, the seeds nutlets with abaxial ridges, as in Bourreria); ovaries 2-4 carpellate; flowers rotate; leaves entire or very remotely serrulate.
Senna
Long (abaxial) filaments 13-18.5 mm long; style 5-8 mm long
Long (abaxial) filaments 13-18.5 mm long; style 5-8 mm long
Senna
Long (abaxial) filaments (6.5-) 7-11.5 mm long; style 4.5-6.5 (-7) mm
Long (abaxial) filaments (6.5-) 7-11.5 mm long; style 4.5-6.5 (-7) mm
Rhamnus
Leaf blades widest at or past the midpoint; upper leaf surface hirtellous along main veins (rarely glabrous); abaxial surface glabrous or glabrate; pedicels 3-7 mm long
Leaf blades widest at or past the midpoint; upper leaf surface hirtellous along main veins (rarely glabrous); abaxial surface glabrous or glabrate; pedicels 3-7 mm long
Euphorbia
Seeds reddish brown to brown, 1.3-1.4 × 0.8-0.9 mm, with 4-6 shallow pits or irregular oblong grooves on adaxial faces, small-pitted or nearly smooth on abaxial faces.
Seeds reddish brown to brown, 1.3-1.4 × 0.8-0.9 mm, with 4-6 shallow pits or irregular oblong grooves on adaxial faces, small-pitted or nearly smooth on abaxial faces.
Potamogeton
Leaves 1-3.5 mm wide, often reddish-brown colored, with rounded or slightly apiculate apices; fruits with abaxial or lateral keels; [ne. PA, n. NJ, northward]
Leaves 1-3.5 mm wide, often reddish-brown colored, with rounded or slightly apiculate apices; fruits with abaxial or lateral keels; [ne. PA, n. NJ, northward]
Arundinaria
Primary branch basal nodes not developing secondary branches; primary branches usually < 35 cm long; foliage blade abaxial surfaces sparsely pilose or glabrous; auricles absent; top knot blades 9-22.5 cm long; [AL north to e. TN and w. NC]
Primary branch basal nodes not developing secondary branches; primary branches usually < 35 cm long; foliage blade abaxial surfaces sparsely pilose or glabrous; auricles absent; top knot blades 9-22.5 cm long; [AL north to e. TN and w. NC]
Arundinaria
Primary branch basal nodes developing secondary branches; primary branches 12-49 cm long; foliage blade abaxial surfaces long pubescent; auricles present; top knot blades 9-37 cm long; [known from AL]
Primary branch basal nodes developing secondary branches; primary branches 12-49 cm long; foliage blade abaxial surfaces long pubescent; auricles present; top knot blades 9-37 cm long; [known from AL]
Rumex
Bases of leaf blades abruptly truncate to slightly cordate (occasionally broadly cuneate); abaxial surface of leaf blades and inflorescence branches papillose-pubescent; tubercle of the inner tepals distinctly reticulate-pitted; [natives in a variety of coastal and inland wetland and riparian habitats, collectively widespread]
Bases of leaf blades abruptly truncate to slightly cordate (occasionally broadly cuneate); abaxial surface of leaf blades and inflorescence branches papillose-pubescent; tubercle of the inner tepals distinctly reticulate-pitted; [natives in a variety of coastal and inland wetland and riparian habitats, collectively widespread]
Rumex
Bases of leaf blades narrowly cuneate (rarely broadly cuneate); abaxial surface of leaf blades and inflorescence branches glabrous or inconspicuously papillose; tubercle of the inner tepals usually smooth; [non-native of disturbed habitats, NJ northward]
Bases of leaf blades narrowly cuneate (rarely broadly cuneate); abaxial surface of leaf blades and inflorescence branches glabrous or inconspicuously papillose; tubercle of the inner tepals usually smooth; [non-native of disturbed habitats, NJ northward]
Salix
Ovaries moderately to very densely short-silky or villous; largest medial blades moderately to very densely appressed hairy; staminate abaxial nectaries absent; floral bracts moderately to very densely hairy; capsules (2.5-) 4-7 mm; [s. TX]
Ovaries moderately to very densely short-silky or villous; largest medial blades moderately to very densely appressed hairy; staminate abaxial nectaries absent; floral bracts moderately to very densely hairy; capsules (2.5-) 4-7 mm; [s. TX]
Salix
Ovaries glabrous or sparsely long-silky; largest medial blades moderately densely hairy or glabrous; staminate abaxial nectaries present; floral bracts sparsely hairy; capsules (4-) 5-8 (-10) mm; [widespread, including s. TX]
Ovaries glabrous or sparsely long-silky; largest medial blades moderately densely hairy or glabrous; staminate abaxial nectaries present; floral bracts sparsely hairy; capsules (4-) 5-8 (-10) mm; [widespread, including s. TX]
Salix
Stipules on early leaves foliaceous; abaxial leaf surface glabrous, pilose, or moderately densely villous to long-silky; leaves (at least juvenile) with a mix of white and ferruginous hairs; leaf apex usually long-acuminate to caudate; branches slightly to highly glossy; pistillate catkins slender to stout, 7-15 mm wide; stigma lobes 0.2-0.4 mm; capsules 5-7 mm long; plants fruiting in late spring or summer [riparian and gravelly floodplain habitats, stream shores, lake margins, occasionally in fens or marly peatlands; VA northward]
Stipules on early leaves foliaceous; abaxial leaf surface glabrous, pilose, or moderately densely villous to long-silky; leaves (at least juvenile) with a mix of white and ferruginous hairs; leaf apex usually long-acuminate to caudate; branches slightly to highly glossy; pistillate catkins slender to stout, 7-15 mm wide; stigma lobes 0.2-0.4 mm; capsules 5-7 mm long; plants fruiting in late spring or summer [riparian and gravelly floodplain habitats, stream shores, lake margins, occasionally in fens or marly peatlands; VA northward]
Salix
Stipules on early leaves absent or minute; abaxial leaf surface usually ± glabrous, only thinly glaucous, if at all; leaves with white hairs only (when present); leaf apex usually acuminate, sometimes acute (rarely subcaudate); branches dull or slightly glossy; pistillate catkins stout to globose, 11-22 mm wide; stigma lobes 0.4-0.7 mm long; capsules (6-)7-12 mm long; plants fruiting in late summer or in fall; [mostly exclusive to rich fens and other high pH wetlands; PA northward]
Stipules on early leaves absent or minute; abaxial leaf surface usually ± glabrous, only thinly glaucous, if at all; leaves with white hairs only (when present); leaf apex usually acuminate, sometimes acute (rarely subcaudate); branches dull or slightly glossy; pistillate catkins stout to globose, 11-22 mm wide; stigma lobes 0.4-0.7 mm long; capsules (6-)7-12 mm long; plants fruiting in late summer or in fall; [mostly exclusive to rich fens and other high pH wetlands; PA northward]
Salix
Leaf adaxial surface not veiny-rugose (or only weakly so); leaf abaxial surface whitened, but not wooly; catkins 9-47 mm long; floral bracts 1.2-2 mm long; filaments glabrous or basally pubescent; [forest edges, successional habitats, open sandy or rocky habitats and other similar dry to mesic habitats; associated southward with mafic habitats]
Leaf adaxial surface not veiny-rugose (or only weakly so); leaf abaxial surface whitened, but not wooly; catkins 9-47 mm long; floral bracts 1.2-2 mm long; filaments glabrous or basally pubescent; [forest edges, successional habitats, open sandy or rocky habitats and other similar dry to mesic habitats; associated southward with mafic habitats]
Salix
Leaf adaxial surface conspicuously veiny-rugose; leaf abaxial surface densely wooly; catkins 17-39 mm long; filaments glabrous; [fens and other alkaline wetlands]
Leaf adaxial surface conspicuously veiny-rugose; leaf abaxial surface densely wooly; catkins 17-39 mm long; filaments glabrous; [fens and other alkaline wetlands]
Salix
Abaxial leaf surface with a mixture of white or gray hairs, without ferrugineous hairs; branches grayish; plants multi-stemmed shrubs to 3-7 m tall
Abaxial leaf surface with a mixture of white or gray hairs, without ferrugineous hairs; branches grayish; plants multi-stemmed shrubs to 3-7 m tall
Salix
Abaxial leaf surface with a mixture of white and rusty (ferrugineous) hairs; branches yellowish to reddish; plants with single stems or trunks 3-12 m tall
Abaxial leaf surface with a mixture of white and rusty (ferrugineous) hairs; branches yellowish to reddish; plants with single stems or trunks 3-12 m tall
Salix
Leaf abaxial surface thickly or conspicuously glaucous, sometimes densely obscured by short-silky hairs; leaf margins usually a mix of crenate, crenulate, or serrulate teeth, the apices acute, acuminate or convex; petioles convex, flat, or shallowly grooved; branches highly brittle; [sandy or cobbly river and lake shores, swamps, ditches, fens, other various habitats]
Leaf abaxial surface thickly or conspicuously glaucous, sometimes densely obscured by short-silky hairs; leaf margins usually a mix of crenate, crenulate, or serrulate teeth, the apices acute, acuminate or convex; petioles convex, flat, or shallowly grooved; branches highly brittle; [sandy or cobbly river and lake shores, swamps, ditches, fens, other various habitats]
Salix
Leaf abaxial surface thinly glaucous; leaf margins consistently serrate, the apices acuminate, caudate or acute; petioles deeply grooved; branches flexible and sometimes brittle; [plants of rich alkaline wetlands]
Leaf abaxial surface thinly glaucous; leaf margins consistently serrate, the apices acuminate, caudate or acute; petioles deeply grooved; branches flexible and sometimes brittle; [plants of rich alkaline wetlands]
Salix
Leaves not coriaceous, abaxial surfaces glaucous, sometimes obscured by densely short-silky hairs, the margins serrulate or less often obscurely crenulate (proximal blades sometimes nearly entire); catkins flowering as (coetaneous) or just before leaves emerge; capsules 2.5-4 mm long, pubescent; filaments pubescent
Leaves not coriaceous, abaxial surfaces glaucous, sometimes obscured by densely short-silky hairs, the margins serrulate or less often obscurely crenulate (proximal blades sometimes nearly entire); catkins flowering as (coetaneous) or just before leaves emerge; capsules 2.5-4 mm long, pubescent; filaments pubescent
Salix
Leaves coriaceous, abaxial surfaces thickly glaucous, the margins mostly obscurely crenate to crenulate, sometimes crenulate-serrulate; staminate catkins emerging before leaves, pistillate as leaves emerge; capsules 5-11 mm long, glabrous; filaments glabrous throughout
Leaves coriaceous, abaxial surfaces thickly glaucous, the margins mostly obscurely crenate to crenulate, sometimes crenulate-serrulate; staminate catkins emerging before leaves, pistillate as leaves emerge; capsules 5-11 mm long, glabrous; filaments glabrous throughout
Salix
Leaves narrowly elliptic, elliptic, narrowly oblong, obovate or oblanceolate; abaxial leaf surfaces thickly glaucous and glabrous to sparsely pubescent (thus glaucous surface usually very conspicuous); leaf blade bases cordate, rounded, or broadly cuneate; stipules foliaceous or rudimentary to absent; capsules glabrous.
Leaves narrowly elliptic, elliptic, narrowly oblong, obovate or oblanceolate; abaxial leaf surfaces thickly glaucous and glabrous to sparsely pubescent (thus glaucous surface usually very conspicuous); leaf blade bases cordate, rounded, or broadly cuneate; stipules foliaceous or rudimentary to absent; capsules glabrous.
Salix
Leaves lorate, narrowly elliptic, or narrowly oblong; abaxial leaf surfaces glaucous and often sparsely to densely silky pubescent; leaf blade bases cuneate; stipules absent to rudimentary (or distally foliaceous on later stipules); capsules silky-pubescent
Leaves lorate, narrowly elliptic, or narrowly oblong; abaxial leaf surfaces glaucous and often sparsely to densely silky pubescent; leaf blade bases cuneate; stipules absent to rudimentary (or distally foliaceous on later stipules); capsules silky-pubescent
Salix
Leaf blades 2.5-7 cm long, sometimes nearly entire at the base; stipules absent or minute; branches flexible (not breaking cleanly at junction of annual growth); leaf blades (at least expanding leaves) with ferrugineous and white hairs, the abaxial surface sparely to densely pubescent; capsules 5-9 mm long, beaked; [section Geyerianae]
Leaf blades 2.5-7 cm long, sometimes nearly entire at the base; stipules absent or minute; branches flexible (not breaking cleanly at junction of annual growth); leaf blades (at least expanding leaves) with ferrugineous and white hairs, the abaxial surface sparely to densely pubescent; capsules 5-9 mm long, beaked; [section Geyerianae]
Symphyotrichum
Disc corolla lobes usually bright yellow (fading reddish-brown), lobes ca. 1/2 length of limb; rays mostly 16-26 (also keyed below); plants long-rhizomatous; abaxial leaf faces and midveins usually sparsely to densely strigose or strigillose
Disc corolla lobes usually bright yellow (fading reddish-brown), lobes ca. 1/2 length of limb; rays mostly 16-26 (also keyed below); plants long-rhizomatous; abaxial leaf faces and midveins usually sparsely to densely strigose or strigillose
Symphyotrichum
Disc corolla lobes cream (fading purplish), lobes to ¾ length of limb; rays mostly 8-15; plants cespitose; abaxial leaf faces glabrous (midveins ±pilose)
Disc corolla lobes cream (fading purplish), lobes to ¾ length of limb; rays mostly 8-15; plants cespitose; abaxial leaf faces glabrous (midveins ±pilose)
Vaccinium
Plants 1.0-4.5 (-7.0) m tall; leaf blades coriaceous, the lower surface bluish green and glaucous when fresh, stipitate glands on abaxial leaf surfaces sparse to less often moderately dense, rarely lacking, trichomes 0.32-0.50 (-0.60) mm long; hypanthium usually with glaucescence, rarely without; fruits 8-16 mm in diameter
Plants 1.0-4.5 (-7.0) m tall; leaf blades coriaceous, the lower surface bluish green and glaucous when fresh, stipitate glands on abaxial leaf surfaces sparse to less often moderately dense, rarely lacking, trichomes 0.32-0.50 (-0.60) mm long; hypanthium usually with glaucescence, rarely without; fruits 8-16 mm in diameter
Symphyotrichum
Stems densely pubescent, usually purplish; abaxial cauline leaf midvein moderately to densely pubescent; capitulescence widely spreading and heads with lavender to purple ray florets; shoots often found in clumps of 2-6 arising from a persistent stout caudex
Stems densely pubescent, usually purplish; abaxial cauline leaf midvein moderately to densely pubescent; capitulescence widely spreading and heads with lavender to purple ray florets; shoots often found in clumps of 2-6 arising from a persistent stout caudex
Symphyotrichum
Stems glabrous, occasionally hispidulous in lines; abaxial cauline leaf midvein glabrous; capitulescence dense, leafy; heads with white to pale lavender ray florets; shoots arising singly from elongate rhizomes
Stems glabrous, occasionally hispidulous in lines; abaxial cauline leaf midvein glabrous; capitulescence dense, leafy; heads with white to pale lavender ray florets; shoots arising singly from elongate rhizomes
Asteraceae
Plants with well-developed cauline leaves, the margins entire or sometimes toothed (usually entire in Aphanostephus, occasionally deeply lobed); abaxial surface of the ray lamina sometimes white, but often with a prominent purple or blue midstripe (except Leucanthemum, which merely dries pink)
Plants with well-developed cauline leaves, the margins entire or sometimes toothed (usually entire in Aphanostephus, occasionally deeply lobed); abaxial surface of the ray lamina sometimes white, but often with a prominent purple or blue midstripe (except Leucanthemum, which merely dries pink)
Asteraceae
Leaves primarily basal, the cauline leaves absent or fewer and much reduced in size from basal leaves; abaxial surface of the ray laminae white or sometimes pink-tinged (on live plants) but lacking a prominent colored midstripe.
Leaves primarily basal, the cauline leaves absent or fewer and much reduced in size from basal leaves; abaxial surface of the ray laminae white or sometimes pink-tinged (on live plants) but lacking a prominent colored midstripe.
Asteraceae
Plants not aromatic; ray laminae not deflexed; cypsela with 3 ribs and 1-5 abaxial-apical resin sacs
Plants not aromatic; ray laminae not deflexed; cypsela with 3 ribs and 1-5 abaxial-apical resin sacs
Asteraceae
Leaves strigose, the margins crenate-serrate; roots not red-tipped; abaxial surface of ray laminae often pink or purple tinged, flowers closing at night
Leaves strigose, the margins crenate-serrate; roots not red-tipped; abaxial surface of ray laminae often pink or purple tinged, flowers closing at night
Asteraceae
Leaves glabrous (or faces sparsely hairy), the margins entire or toothed; roots usually red-tipped; rays drying pinkish but abaxial surface not conspicuously pink tinged on live plants
Leaves glabrous (or faces sparsely hairy), the margins entire or toothed; roots usually red-tipped; rays drying pinkish but abaxial surface not conspicuously pink tinged on live plants
Terminalia
Larger leaf blades 8-35 cm long, abaxial domatia absent or present as pits or hair-tufts within primary and secondary vein axils; calyx lobes well developed; fruit 10-70 mm long (fruit not viviparous); [non-natives]
Larger leaf blades 8-35 cm long, abaxial domatia absent or present as pits or hair-tufts within primary and secondary vein axils; calyx lobes well developed; fruit 10-70 mm long (fruit not viviparous); [non-natives]
Terminalia
Larger leaf blades 1-9 cm long, abaxial domatia absent; calyx lobes scarsely developed (persistent at apex of fruit); fruit 5-10 mm long (sometimes fruit viviparous); [native or uncertain nativity].
Larger leaf blades 1-9 cm long, abaxial domatia absent; calyx lobes scarsely developed (persistent at apex of fruit); fruit 5-10 mm long (sometimes fruit viviparous); [native or uncertain nativity].
Terminalia
Leaf blades 8-18 cm long, with abaxial domatia in tufts of hair, the bases cuneate; drupes 1.2-2 cm long, with 2 poorly-developed ridges
Leaf blades 8-18 cm long, with abaxial domatia in tufts of hair, the bases cuneate; drupes 1.2-2 cm long, with 2 poorly-developed ridges
Terminalia
Leaf blades 16-35 cm long, with abaxial pit domatia, 9-15 cm wide, the bases often truncate to auriculate; drupes 3.5-7 cm long, with 2 well-developed ridges
Leaf blades 16-35 cm long, with abaxial pit domatia, 9-15 cm wide, the bases often truncate to auriculate; drupes 3.5-7 cm long, with 2 well-developed ridges
Euphorbia
Seeds with faint ridges, not interrupting abaxial keel; cyathia glands green, brown, or yellow to pink (lacking a darkened red or purple coloration).
Seeds with faint ridges, not interrupting abaxial keel; cyathia glands green, brown, or yellow to pink (lacking a darkened red or purple coloration).
Euphorbia
Seeds with 3-4 (-6) prominent transverse ridges that interrupt abaxial keel; cyathia glands red to purple (sometimes yellow on older cyathia); stems prostrate; [s. IN and c. TN westward, primarily w. of MS river]
Seeds with 3-4 (-6) prominent transverse ridges that interrupt abaxial keel; cyathia glands red to purple (sometimes yellow on older cyathia); stems prostrate; [s. IN and c. TN westward, primarily w. of MS river]
Euphorbia
Staminate flowers 2-5; seeds 0.9-1.0 mm long, minutely beaded with 3-4 transerve ridges that do not interrupt abaxial keel; [coastal LA and TX only]
Staminate flowers 2-5; seeds 0.9-1.0 mm long, minutely beaded with 3-4 transerve ridges that do not interrupt abaxial keel; [coastal LA and TX only]
Cicuta
Corky-thickened ribs of the abaxial surface of the mericarps more-or-less equaling the oil ducts in the intervals.
Corky-thickened ribs of the abaxial surface of the mericarps more-or-less equaling the oil ducts in the intervals.
Cicuta
Corky-thickened ribs of the abaxial surface of the mericarp much narrower than the oil ducts in the intervals
Corky-thickened ribs of the abaxial surface of the mericarp much narrower than the oil ducts in the intervals
Apocynaceae
Corolla lobes glabrous or if pubescent, not conspicuously so on the upper surfaces (usually confined to abaxial corolla lobe surfaces, if pubescent at all); latex white throughout; [native and non-natives, TX and FL]
Corolla lobes glabrous or if pubescent, not conspicuously so on the upper surfaces (usually confined to abaxial corolla lobe surfaces, if pubescent at all); latex white throughout; [native and non-natives, TX and FL]
Trichomanes
Involucre narrow, elongate, not flared at apex (or only weakly so), 2.3 × 1.3 mm; sporangial receptacle 3-15 mm long; laminar margins with simple trichomes, though these sporadic; stipe narrowly and often inconspicuously alate, generally only in upper ½; stipe to 10 cm long, blade to 18 cm long; laminar indumentum sparse, more abundant on basal portion of abaxial rachis; hairs long, single-celled atop a distinctly bulbous basal cell, these sometimes dark, hairs occasionally multi-celled, rarely clavate; rachis wings generally equal to or less than the width of rachis
Involucre narrow, elongate, not flared at apex (or only weakly so), 2.3 × 1.3 mm; sporangial receptacle 3-15 mm long; laminar margins with simple trichomes, though these sporadic; stipe narrowly and often inconspicuously alate, generally only in upper ½; stipe to 10 cm long, blade to 18 cm long; laminar indumentum sparse, more abundant on basal portion of abaxial rachis; hairs long, single-celled atop a distinctly bulbous basal cell, these sometimes dark, hairs occasionally multi-celled, rarely clavate; rachis wings generally equal to or less than the width of rachis
Trichomanes
Involucre narrow, elongate, not flared at apex (or only weakly so), 2.3 × 1.3 mm; sporangial receptacle 3-15 mm long; laminar margins with simple trichomes, though these sporadic; stipe narrowly and often inconspicuously alate, generally only in upper ½; stipe to 10 cm long, blade to 18 cm long; laminar indumentum sparse, more abundant on basal portion of abaxial rachis; hairs long, single-celled atop a distinctly bulbous basal cell, these sometimes dark, hairs occasionally multi-celled, rarely clavate; rachis wings generally equal to or less than the width of rachis
Involucre narrow, elongate, not flared at apex (or only weakly so), 2.3 × 1.3 mm; sporangial receptacle 3-15 mm long; laminar margins with simple trichomes, though these sporadic; stipe narrowly and often inconspicuously alate, generally only in upper ½; stipe to 10 cm long, blade to 18 cm long; laminar indumentum sparse, more abundant on basal portion of abaxial rachis; hairs long, single-celled atop a distinctly bulbous basal cell, these sometimes dark, hairs occasionally multi-celled, rarely clavate; rachis wings generally equal to or less than the width of rachis
Salvia
Calyx 3.5-4 mm long (mature 5.0-5.5 mm long); corolla white to lavender; leaf blades 1.0-2.5 cm long, ovate, the abaxial surface densely pubescent
Calyx 3.5-4 mm long (mature 5.0-5.5 mm long); corolla white to lavender; leaf blades 1.0-2.5 cm long, ovate, the abaxial surface densely pubescent
Salvia
Calyx 4.5-7 mm long (mature 5.5-8.0 mm long); corolla blue to violet; leaf blades 1.5-4.5 cm long, deltoid, the abaxial surface glabrous, pubescent on the veins
Calyx 4.5-7 mm long (mature 5.5-8.0 mm long); corolla blue to violet; leaf blades 1.5-4.5 cm long, deltoid, the abaxial surface glabrous, pubescent on the veins
Plantae
Inflorescence a raceme or panicle consisting of spherical heads, the fruit densely clustered in conelike heads but not cypselae; leaf abaxial surfaces with conspicuous pit domatia at the junction of midvein and secondary veins; plants salt-adapted shrubs of coastal habitats
Inflorescence a raceme or panicle consisting of spherical heads, the fruit densely clustered in conelike heads but not cypselae; leaf abaxial surfaces with conspicuous pit domatia at the junction of midvein and secondary veins; plants salt-adapted shrubs of coastal habitats
Plantae
Fruit a drupe, the drupe bearing 4 bony nutlets with abaxial ridges; flowers rotate and salverform (the corolla tube evident), arranged in terminal cymes, the corolla lobes usually orbicular; leaves scabrous or hispid (except B. succulenta)
Fruit a drupe, the drupe bearing 4 bony nutlets with abaxial ridges; flowers rotate and salverform (the corolla tube evident), arranged in terminal cymes, the corolla lobes usually orbicular; leaves scabrous or hispid (except B. succulenta)
Plantae
Fruit a drupe, the drupe bearing 4 bony nutlets with abaxial ridges; flowers white, rotate and salverform (the corolla tube evident), arranged in terminal cymes, the corolla lobes usually orbicular
Fruit a drupe, the drupe bearing 4 bony nutlets with abaxial ridges; flowers white, rotate and salverform (the corolla tube evident), arranged in terminal cymes, the corolla lobes usually orbicular
Apocynaceae
Flowers cream-colored, long salverform (the floral tube 40-100 mm long and conspicuously pubescent); follicles long-fusiform and pubescent; leaf abaxial surfaces densely gray-white pubescent; plants short shrubs (2-5+ dm tall); [s. TX only in our area]
Flowers cream-colored, long salverform (the floral tube 40-100 mm long and conspicuously pubescent); follicles long-fusiform and pubescent; leaf abaxial surfaces densely gray-white pubescent; plants short shrubs (2-5+ dm tall); [s. TX only in our area]
Apocynaceae
Flowers cream-colored, long salverform (the floral tube 40-100 mm long and conspicuously pubescent); follicles long-fusiform and pubescent; leaf abaxial surfaces densely gray-white pubescent; plants short shrubs (2-5+ dm tall); [s. TX only in our area]
Flowers cream-colored, long salverform (the floral tube 40-100 mm long and conspicuously pubescent); follicles long-fusiform and pubescent; leaf abaxial surfaces densely gray-white pubescent; plants short shrubs (2-5+ dm tall); [s. TX only in our area]


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