Flora of the Southeastern United States

Equisetum

Sheaths of the mid or upper stem after their first August tan or grayish, with a black circumferential band at the sheath summit (just below the teeth) and a black band at the base of the sheath ; cone apiculate.

Sheaths of the mid or upper stem after their first August tan or grayish, with a black circumferential band at the sheath summit (just below the teeth) and a black band at the base of the sheath ; cone apiculate.

Ophioglossum

Large areoles of the of the sterile blade subdivided into smaller areoles, these further subdivided into smaller areoles and free veinlets; sterile blade apiculate

Large areoles of the of the sterile blade subdivided into smaller areoles, these further subdivided into smaller areoles and free veinlets; sterile blade apiculate

Potamogeton

Leaves usually bristle-tipped, occasionally apiculate to blunt, 3-veined, 1-2.2 (-4) mm wide; lacunae in 1-2 rows on each side of midrib; fruits 3-keeled, 2.3-4 mm long

Leaves usually bristle-tipped, occasionally apiculate to blunt, 3-veined, 1-2.2 (-4) mm wide; lacunae in 1-2 rows on each side of midrib; fruits 3-keeled, 2.3-4 mm long

Potamogeton

Leaf apex bristle-tipped (rarely apiculate); peduncles recurved, axillary or axillary and terminal, 0.5-6.6 cm long

Leaf apex bristle-tipped (rarely apiculate); peduncles recurved, axillary or axillary and terminal, 0.5-6.6 cm long

Potamogeton

Leaf apex blunt, acute, or apiculate, but not bristle-tipped; peduncles straight, terminal, 0.5-6.6 cm long.

Leaf apex blunt, acute, or apiculate, but not bristle-tipped; peduncles straight, terminal, 0.5-6.6 cm long.

Potamogeton

Mature fruit obovate, sides concave, beak mostly forward; peduncle filiform to cylindrical, usually 1-3 per plant; inflorescence usually interrupted; leaves with up to 2 rows of lacunae along midrib, apex acute, rarely apiculate; stipules mostly connate

Mature fruit obovate, sides concave, beak mostly forward; peduncle filiform to cylindrical, usually 1-3 per plant; inflorescence usually interrupted; leaves with up to 2 rows of lacunae along midrib, apex acute, rarely apiculate; stipules mostly connate

Erythronium

Petals (inner tepals) with auricles near their bases (the auricles small lobes, < 1 mm long, bent inwards); capsule and ovary truncate, rounded, apiculate, or beaked at apex; mature capsules usually held well off ground, the apex oriented horizontally or ascending; stolons usually (1-) 2-5 per bulb; anthers usually yellow (rarely brown or lavender).

Petals (inner tepals) with auricles near their bases (the auricles small lobes, < 1 mm long, bent inwards); capsule and ovary truncate, rounded, apiculate, or beaked at apex; mature capsules usually held well off ground, the apex oriented horizontally or ascending; stolons usually (1-) 2-5 per bulb; anthers usually yellow (rarely brown or lavender).

Erythronium

Petals (inner tepals) with auricles near their bases (the auricles small lobes, < 1 mm long, bent inwards); capsule and ovary truncate, rounded, apiculate, or beaked at apex; mature capsules usually held well off ground, the apex oriented horizontally or ascending; stolons usually (1-) 2-5 per bulb; anthers usually yellow (rarely brown or lavender).

Petals (inner tepals) with auricles near their bases (the auricles small lobes, < 1 mm long, bent inwards); capsule and ovary truncate, rounded, apiculate, or beaked at apex; mature capsules usually held well off ground, the apex oriented horizontally or ascending; stolons usually (1-) 2-5 per bulb; anthers usually yellow (rarely brown or lavender).

Erythronium

Capsule truncate, rounded, or apiculate at the apex; petals (inner tepals) with small auricles at the base, not clasping a filament.

Capsule truncate, rounded, or apiculate at the apex; petals (inner tepals) with small auricles at the base, not clasping a filament.

Amaryllidaceae

Tepals apiculate at the tip, especially the outer 3 tepals; scape hollow; [tribe Hippeastreae, subtribe Zephyranthinae]

Tepals apiculate at the tip, especially the outer 3 tepals; scape hollow; [tribe Hippeastreae, subtribe Zephyranthinae]

Amaryllidaceae

Tepals apiculate at the tip, especially the outer 3 tepals; scape hollow; [tribe Hippeastreae, subtribe Zephyranthinae]

Tepals apiculate at the tip, especially the outer 3 tepals; scape hollow; [tribe Hippeastreae, subtribe Zephyranthinae]

Eriocaulon

Bracts orbicular or broadly oblong, the apex rounded or apiculate; bract margins and apex hairy; perianth hairy; seed not pale-reticulate.

Bracts orbicular or broadly oblong, the apex rounded or apiculate; bract margins and apex hairy; perianth hairy; seed not pale-reticulate.

Bulbostylis

Achenes finely transversely rugose or rugulose, tan or brown (when ripe); spikelet scales 1.5-2.5 mm long, with truncate to apiculate apices.

Achenes finely transversely rugose or rugulose, tan or brown (when ripe); spikelet scales 1.5-2.5 mm long, with truncate to apiculate apices.

Fuirena

Perianth bristles no longer than the achene stipe (not nearly reaching halfway up the achene body), without barbs (sometimes very finely toothed, the teeth ascending); blades of the perianth scales with a blunt or short-apiculate apex

Perianth bristles no longer than the achene stipe (not nearly reaching halfway up the achene body), without barbs (sometimes very finely toothed, the teeth ascending); blades of the perianth scales with a blunt or short-apiculate apex

Pyracantha

Leaf blades oblanceolate or obovate, the apices obtuse, emarginate, or short-apiculate; hypanthium and pedicels glabrate

Leaf blades oblanceolate or obovate, the apices obtuse, emarginate, or short-apiculate; hypanthium and pedicels glabrate

Pyracantha

Leaf blades lanceolate, oblong, oblanceolate, ovate-lanceolate, elliptic, or ovate, the apices usually acute or short-apiculate; hypanthium and pedicels finely hairy

Leaf blades lanceolate, oblong, oblanceolate, ovate-lanceolate, elliptic, or ovate, the apices usually acute or short-apiculate; hypanthium and pedicels finely hairy

Pyracantha

Leaf blades widest near the middle (elliptic, oblong, or oblong-obovate); leaf apices obtuse, apiculate, or aristate; leaf undersurface glaucescent

Leaf blades widest near the middle (elliptic, oblong, or oblong-obovate); leaf apices obtuse, apiculate, or aristate; leaf undersurface glaucescent

Hypericum

Large outer sepals acute and apiculate at the apex; shrub rhizomatous-colonial, to 15 dm tall; bark of older stems gray to black, tight and smooth; [FL peninsula only]

Large outer sepals acute and apiculate at the apex; shrub rhizomatous-colonial, to 15 dm tall; bark of older stems gray to black, tight and smooth; [FL peninsula only]

Achyranthes

Leaf blades 1-4 (-6) cm long, 1-4 (-6) cm wide, obtuse to rounded and apiculate at the tip; tepals 3-4 mm long; utricles 2-2.5 mm long

Leaf blades 1-4 (-6) cm long, 1-4 (-6) cm wide, obtuse to rounded and apiculate at the tip; tepals 3-4 mm long; utricles 2-2.5 mm long

Asclepias

Stem and leaves softly puberulent; leaves apiculate

Stem and leaves softly puberulent; leaves apiculate

Lamiaceae

Calyx with 3 primary lobes (upper lobe occasionally with 3 apiculate teeth, e.g. Salvia lyrata); flowers 3 cm or less, in terminal thyrses.

Calyx with 3 primary lobes (upper lobe occasionally with 3 apiculate teeth, e.g. Salvia lyrata); flowers 3 cm or less, in terminal thyrses.

Lamiaceae

Bracts broadly rounded, apiculate or absent.

Bracts broadly rounded, apiculate or absent.

Lamiaceae

Bracts broadly rounded, apiculate; inflorescence terminal

Bracts broadly rounded, apiculate; inflorescence terminal

Lamiaceae

Bracts setaceous or elliptic, but not broadly rounded or apiculate, present.

Bracts setaceous or elliptic, but not broadly rounded or apiculate, present.

Stachys

Leaf blades ovate-oblong to elliptic; calyx lobes deltoid-acuminate to an apiculate tip, ½ to 2/3 as long as the calyx tube; bracts of the inflorescence usually conspicuous and only gradually reduced upward; plants generally more pubescent

Leaf blades ovate-oblong to elliptic; calyx lobes deltoid-acuminate to an apiculate tip, ½ to 2/3 as long as the calyx tube; bracts of the inflorescence usually conspicuous and only gradually reduced upward; plants generally more pubescent

Stachys

Mature calyx lobes triangular deltoid and abruptly apiculate, less than half as long as the calyx tube.

Mature calyx lobes triangular deltoid and abruptly apiculate, less than half as long as the calyx tube.

Stachys

Mature calyx lobes lanceolate or deltoid-acuminate to an apiculate tip, more than half as long as the calyx tube.

Mature calyx lobes lanceolate or deltoid-acuminate to an apiculate tip, more than half as long as the calyx tube.

Gamochaeta

Stems usually ± pannose or pannose-tomentose (hairs individually evident, longitudinally arranged); involucres 3.0-4.5 mm high; apices of inner phyllaries acute, obtuse, or truncate-rounded, sometimes apiculate; bisexual florets 3-6; cypselas tan to brownish.

Stems usually ± pannose or pannose-tomentose (hairs individually evident, longitudinally arranged); involucres 3.0-4.5 mm high; apices of inner phyllaries acute, obtuse, or truncate-rounded, sometimes apiculate; bisexual florets 3-6; cypselas tan to brownish.

Gamochaeta

Blades of cauline leaves oblanceolate to oblanceolate-oblong or oblanceolate-obovate; involucres 3.0-3.5 mm high; laminae of inner phyllaries elliptic-oblong to oblong, apices truncate-rounded or obtuse and apiculate; bisexual florets (3-) 4-6; plants usually fibrous-rooted, rarely taprooted

Blades of cauline leaves oblanceolate to oblanceolate-oblong or oblanceolate-obovate; involucres 3.0-3.5 mm high; laminae of inner phyllaries elliptic-oblong to oblong, apices truncate-rounded or obtuse and apiculate; bisexual florets (3-) 4-6; plants usually fibrous-rooted, rarely taprooted

Gamochaeta

Blades of cauline leaves oblanceolate to spatulate (basal cells of hairs on adaxial faces persistent, expanded, glassy); involucres 4.0-4.5 mm high; laminae of inner phyllaries triangular, apices acute (not apiculate); bisexual florets 3-4; plants fibrous-rooted or taprooted

Blades of cauline leaves oblanceolate to spatulate (basal cells of hairs on adaxial faces persistent, expanded, glassy); involucres 4.0-4.5 mm high; laminae of inner phyllaries triangular, apices acute (not apiculate); bisexual florets 3-4; plants fibrous-rooted or taprooted

Liatris

Stems and leaves usually glabrous; inner phyllaries usually apically rounded to truncate, apiculate, all essentially erect and appressed, usually with a narrow hyaline border

Stems and leaves usually glabrous; inner phyllaries usually apically rounded to truncate, apiculate, all essentially erect and appressed, usually with a narrow hyaline border

Liatris

Mid and inner phyllaries with a point of some kind: either apically acuminate or acute or (if rounded-retuse) minutely involute-cuspidate to apiculate.

Mid and inner phyllaries with a point of some kind: either apically acuminate or acute or (if rounded-retuse) minutely involute-cuspidate to apiculate.

Liatris

Phyllaries apically usually rounded-retuse and minutely involute-cuspidate to apiculate; corolla tubes glabrous within.

Phyllaries apically usually rounded-retuse and minutely involute-cuspidate to apiculate; corolla tubes glabrous within.

Pluchea

Corollas creamy white; heads 6-10 mm high, 6-12 mm wide; phyllaries thinly arachnoid, with sessile glands; outer phyllaries obtuse or obtuse-apiculate; nutlets pinkish, ca. 1 mm long, pubescent on the angles; [flowering late Jul-Oct].

Corollas creamy white; heads 6-10 mm high, 6-12 mm wide; phyllaries thinly arachnoid, with sessile glands; outer phyllaries obtuse or obtuse-apiculate; nutlets pinkish, ca. 1 mm long, pubescent on the angles; [flowering late Jul-Oct].

Vernonia

Phyllary tips acute to rounded (sometimes minutely apiculate), the narrowest short acuminate.

Phyllary tips acute to rounded (sometimes minutely apiculate), the narrowest short acuminate.

Plantae

Leaf blades cordate, the two lobes rounded or sub-acute; leaf apex rounded or apiculate; leaf blade 0.8-8× as long as wide.

Leaf blades cordate, the two lobes rounded or sub-acute; leaf apex rounded or apiculate; leaf blade 0.8-8× as long as wide.

Liriodendron

Fruiting axis ("lance") (34-) avg. 38 (-42) mm long; stamen apex acute to apiculate; tree producing pencil-like pneumatophores; mature leaves of fertile branches small to medium, 4-lobed, the terminal lobes obtuse, broadly rounded to acuminate, though when acuminate the ultimate tip minutely blunt, the base cuneate, rounded, or truncate; [peninsular FL]

Fruiting axis ("lance") (34-) avg. 38 (-42) mm long; stamen apex acute to apiculate; tree producing pencil-like pneumatophores; mature leaves of fertile branches small to medium, 4-lobed, the terminal lobes obtuse, broadly rounded to acuminate, though when acuminate the ultimate tip minutely blunt, the base cuneate, rounded, or truncate; [peninsular FL]

Erythranthe

Fruiting calyces open at the throat, lateral calyx lobes mostly shallowly deltate to merely apiculate or absent, sometimes obscure or obsolete, not turned upward to close the throat.

Fruiting calyces open at the throat, lateral calyx lobes mostly shallowly deltate to merely apiculate or absent, sometimes obscure or obsolete, not turned upward to close the throat.

Rhynchospora

Keel of lower spikelet scales ciliolate; achene tubercle blunt or apiculate; involucral bracts 2-5 mm wide; [s. peninsular FL]

Keel of lower spikelet scales ciliolate; achene tubercle blunt or apiculate; involucral bracts 2-5 mm wide; [s. peninsular FL]

Cyrilla

Racemes mostly 6-9 cm long; leaves 1.5-4.0 cm long, 7-10 mm wide, 3-4× as long as wide, widest about 1/4 of the way from the leaf tip, the apex obtuse to acute; sepals ovate; anthers apiculate at either end; branches mostly spreading; [flatwoods ponds and stringers, or xeric sands of Florida scrub, s. GA and se. AL southward to Panhandle and c. peninsular FL];

Racemes mostly 6-9 cm long; leaves 1.5-4.0 cm long, 7-10 mm wide, 3-4× as long as wide, widest about 1/4 of the way from the leaf tip, the apex obtuse to acute; sepals ovate; anthers apiculate at either end; branches mostly spreading; [flatwoods ponds and stringers, or xeric sands of Florida scrub, s. GA and se. AL southward to Panhandle and c. peninsular FL];

Liatris

Phyllaries variously oblong, lanceolate, or ovate, the margins usually apparently hyaline; phyllary tips erect or appressed to the involucre, acuminate, acute, cuspidate, or apiculate; florets 3-10 (-12); [east of Mississippi River].

Phyllaries variously oblong, lanceolate, or ovate, the margins usually apparently hyaline; phyllary tips erect or appressed to the involucre, acuminate, acute, cuspidate, or apiculate; florets 3-10 (-12); [east of Mississippi River].

Liatris

Stems minutely puberulent-hirtellous; leaves and phyllaries gland-dotted; involucres 7-10 (-14) mm high; inner phyllaries with abruptly acuminate apices, often apiculate or mucronulate

Stems minutely puberulent-hirtellous; leaves and phyllaries gland-dotted; involucres 7-10 (-14) mm high; inner phyllaries with abruptly acuminate apices, often apiculate or mucronulate

Viola

Plant not stoloniferous; rhizome mostly vertical but twisted; leaf blades commonly prostrate on the ground in life, especially in fruit, reniform (occasionally suborbicular), broadly rounded to truncate or apiculate at apex, either entirely glabrous or densely hirsute on one or both leaf surfaces; petals beardless (lateral petals rarely with a few hairs); cleistogamous capsules purple-spotted, on short prostrate peduncles; seeds orange-brown to brown

Plant not stoloniferous; rhizome mostly vertical but twisted; leaf blades commonly prostrate on the ground in life, especially in fruit, reniform (occasionally suborbicular), broadly rounded to truncate or apiculate at apex, either entirely glabrous or densely hirsute on one or both leaf surfaces; petals beardless (lateral petals rarely with a few hairs); cleistogamous capsules purple-spotted, on short prostrate peduncles; seeds orange-brown to brown

Carex

Pistillate scales obtuse to acute or apiculate, apiculus not more than 1/10 of body length.

Pistillate scales obtuse to acute or apiculate, apiculus not more than 1/10 of body length.

Stuckenia

Leaf apex acute, mucronate or apiculate; proximal stipular sheaths not inflated; stems abundantly branched, especially on distal portions; fruits distinctly beaked; [relatively widespread in our region]

Leaf apex acute, mucronate or apiculate; proximal stipular sheaths not inflated; stems abundantly branched, especially on distal portions; fruits distinctly beaked; [relatively widespread in our region]

Stuckenia

Leaf apex notched, obtuse, or round, rarely apiculate; proximal stipular sheaths often inflated; stems sparsely branched on distal portions; fruits without beak; [PA and OH northwards].

Leaf apex notched, obtuse, or round, rarely apiculate; proximal stipular sheaths often inflated; stems sparsely branched on distal portions; fruits without beak; [PA and OH northwards].

Marshallia

Outer phyllaries oblong-obovate, apices conspicuously rounded (though often apiculate); [s. VA, NC, SC, GA, AL, and e. TN].

Outer phyllaries oblong-obovate, apices conspicuously rounded (though often apiculate); [s. VA, NC, SC, GA, AL, and e. TN].

Marshallia

Outer phyllaries lanceolate, apices conspicuously tapered and apiculate; [se. TX, w. LA, e. OK, se. KS, nw. AR, and sw. MO]

Outer phyllaries lanceolate, apices conspicuously tapered and apiculate; [se. TX, w. LA, e. OK, se. KS, nw. AR, and sw. MO]

Linum

Fruit as long as broad or longer, its apex acute, apiculate, or obtuse, (2-) 2.2-3.2 (-3.3) mm long; leaves mostly 1.3-4.3 mm wide.

Fruit as long as broad or longer, its apex acute, apiculate, or obtuse, (2-) 2.2-3.2 (-3.3) mm long; leaves mostly 1.3-4.3 mm wide.

Linum

Leaves (1.0-) 1.3-2.0 (-3.2) mm wide, mostly 50-165 below the inflorescence; septa of the fruit glabrous; false septa virtually complete; fruit apex rounded to apiculate, the exposed portions purple or yellow.

Leaves (1.0-) 1.3-2.0 (-3.2) mm wide, mostly 50-165 below the inflorescence; septa of the fruit glabrous; false septa virtually complete; fruit apex rounded to apiculate, the exposed portions purple or yellow.

Linum

Fruit ovoid, (2.8-) 3.0-3.2 (-3.3) mm long, 2.5-3.1 mm in diameter, the apex minutely apiculate, the exposed portions yellow; seeds 2.1-2.4 mm long; anthers averaging 1.2 mm long

Fruit ovoid, (2.8-) 3.0-3.2 (-3.3) mm long, 2.5-3.1 mm in diameter, the apex minutely apiculate, the exposed portions yellow; seeds 2.1-2.4 mm long; anthers averaging 1.2 mm long

Vernonia

Phyllary tips acute to rounded (sometimes minutely apiculate), the narrowest short acuminate.

Phyllary tips acute to rounded (sometimes minutely apiculate), the narrowest short acuminate.

Juniperus

Prostrate shrubs, < 3 dm tall; apex of scale leaves apiculate; female cones ("berries") with 3-5 seeds; (Long Island NY and northwards]

Prostrate shrubs, < 3 dm tall; apex of scale leaves apiculate; female cones ("berries") with 3-5 seeds; (Long Island NY and northwards]

Juniperus

Prostrate shrubs, < 3 dm tall; apex of scale leaves apiculate; female cones ("berries") with 3-5 seeds; (Long Island NY and northwards]

Prostrate shrubs, < 3 dm tall; apex of scale leaves apiculate; female cones ("berries") with 3-5 seeds; (Long Island NY and northwards]

Orchidaceae

Minute flowers sessile on spikes; lip apiculate, 1-2 mm long; petals narrowly obovate

Minute flowers sessile on spikes; lip apiculate, 1-2 mm long; petals narrowly obovate

Euploca

Corolla limb 8-11 mm long; corolla limb 15-22 mm in diameter; corolla lobes rounded (sometimes apiculate)

Corolla limb 8-11 mm long; corolla limb 15-22 mm in diameter; corolla lobes rounded (sometimes apiculate)

Cyperus

Achene obtuse to truncate at the apex, sometimes apiculate; rachilla persistent; spikelets (at least the larger) lanceolate to linear, usually with 8 or more fertile scales, obtuse to acute, or (C. pumilus) excurved-cuspidate; [subgenus Pycreus]

Achene obtuse to truncate at the apex, sometimes apiculate; rachilla persistent; spikelets (at least the larger) lanceolate to linear, usually with 8 or more fertile scales, obtuse to acute, or (C. pumilus) excurved-cuspidate; [subgenus Pycreus]

Cyperus

Plants not viscid; leaves flat or V-shaped; achenes 0.6-1.5 mm long, without a spongy stipe or whitish overlay, obtuse to apiculate, not beaked; mostly diminutive annuals.

Plants not viscid; leaves flat or V-shaped; achenes 0.6-1.5 mm long, without a spongy stipe or whitish overlay, obtuse to apiculate, not beaked; mostly diminutive annuals.

Cyperus

Achenes oblong, subterete, often only slightly compressed, apex truncate, apiculate; scales 3-5-nerved; spikelets mostly <2 mm wide (except C. filicinus); [section Pycreus].

Achenes oblong, subterete, often only slightly compressed, apex truncate, apiculate; scales 3-5-nerved; spikelets mostly <2 mm wide (except C. filicinus); [section Pycreus].

Cyperus

Spikes dense, the rachis obscured when pressed; achenes lacking a stipitate base, apiculate at the apex; [native of Mexico and Central America, introduced northward along the Gulf and Atlantic coasts]

Spikes dense, the rachis obscured when pressed; achenes lacking a stipitate base, apiculate at the apex; [native of Mexico and Central America, introduced northward along the Gulf and Atlantic coasts]

Mimosa

Leaflets sharply apiculate; heads (not including the filaments) 7-11 mm in diameter; [west of the Mississippi River, very rarely adventive eastwards].

Leaflets sharply apiculate; heads (not including the filaments) 7-11 mm in diameter; [west of the Mississippi River, very rarely adventive eastwards].

Fabaceae

Leaves with a rounded to apiculate apex; flowers strongly bilaterally symmetrical, “pseudopapilionoid”; petals 0.8-1.5 cm long; legumes 4-10 cm long; [natives and exotics, and widely cultivated]

Leaves with a rounded to apiculate apex; flowers strongly bilaterally symmetrical, “pseudopapilionoid”; petals 0.8-1.5 cm long; legumes 4-10 cm long; [natives and exotics, and widely cultivated]

Suaeda

Stems decumbent to erect, densely pubescent; leaf tips acuminate to apiculate

Stems decumbent to erect, densely pubescent; leaf tips acuminate to apiculate

Potamogeton

Leaf apex usually bristle-tipped, acute or rare obtuse to apiculate, leaves 0.6-2 mm wide, 3-5 (-7) veined; winter buds (turions) with leaves ca. 2 ranked, flattened, with inner and outer leaves in same plane (both upright, more or less in the same orientation as stem), the outer leaves not corrugated

Leaf apex usually bristle-tipped, acute or rare obtuse to apiculate, leaves 0.6-2 mm wide, 3-5 (-7) veined; winter buds (turions) with leaves ca. 2 ranked, flattened, with inner and outer leaves in same plane (both upright, more or less in the same orientation as stem), the outer leaves not corrugated

Potamogeton

Leaf apex rounded or apiculate, leaves 1.2-3.2 mm wide, 5-7(-9) veined; winter buds (turions) with leaves ca. 4 ranked, with inner (upright) leaves fanlike and at a right angle to outer leaves (those laterally disposed), the outer leaves corrugated

Leaf apex rounded or apiculate, leaves 1.2-3.2 mm wide, 5-7(-9) veined; winter buds (turions) with leaves ca. 4 ranked, with inner (upright) leaves fanlike and at a right angle to outer leaves (those laterally disposed), the outer leaves corrugated

Potamogeton

Leaves 0.2-2.5 mm wide, usually green colored, with apices obtuse, apiculate, or acute; fruits rounded, without keels; [widespread in US, throughout our flora region].

Leaves 0.2-2.5 mm wide, usually green colored, with apices obtuse, apiculate, or acute; fruits rounded, without keels; [widespread in US, throughout our flora region].

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]

Linum

Inner sepals conspicuously glandular-toothed; leaf apices minutely apiculate (and translucent); leaves relatively translucent, [widespread in our region]

Inner sepals conspicuously glandular-toothed; leaf apices minutely apiculate (and translucent); leaves relatively translucent, [widespread in our region]

Symphyotrichum

Phyllary tips acute to acuminate, sometimes mucronate or apiculate (e.g., S. puniceum), flat (sometimes spreading at tips when foliaceous); flowers pink, purple, or lavender (rarely white in S. firmum).

Phyllary tips acute to acuminate, sometimes mucronate or apiculate (e.g., S. puniceum), flat (sometimes spreading at tips when foliaceous); flowers pink, purple, or lavender (rarely white in S. firmum).

Apocynaceae

Leaf apex acuminate or apiculate; fruit a yellowish-orange follicle with seeds bearing orange-red arils

Leaf apex acuminate or apiculate; fruit a yellowish-orange follicle with seeds bearing orange-red arils

Poaceae

Fertile (upper) florets shiny and black to brown-colored when mature; the glumes abruptly apiculate and (internally) oily, the lower glume bases saccate; plants erect, arching, climbing, or decumbent; [s. FL only in our flora area]

Fertile (upper) florets shiny and black to brown-colored when mature; the glumes abruptly apiculate and (internally) oily, the lower glume bases saccate; plants erect, arching, climbing, or decumbent; [s. FL only in our flora area]

Poaceae

Fertile florets not shiny and black when mature; glume apices truncate to acuminate, but not abruptly apiculate (nor internally oily); plants growing variously, but rarely arching or decumbent

Fertile florets not shiny and black when mature; glume apices truncate to acuminate, but not abruptly apiculate (nor internally oily); plants growing variously, but rarely arching or decumbent

Poaceae

Fertile (upper) florets shiny and black to brown-colored when mature; the glumes abruptly apiculate and (internally) oily, the lower glume bases saccate; plants erect, arching, climbing, or decumbent; [s. FL only in our flora area]

Fertile (upper) florets shiny and black to brown-colored when mature; the glumes abruptly apiculate and (internally) oily, the lower glume bases saccate; plants erect, arching, climbing, or decumbent; [s. FL only in our flora area]