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Key to Convolvulaceae
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40389
1 Plant photosynthetic; stems green. | |
![]() Show caption*© Sequoia Janirella Wrens, some rights reserved (CC BY-NC), uploaded by Sequoia Janirella Wrens | |
2 Corolla 1-10 cm long (or if < 1 cm as in Poranopsis, then the corolla longer than the calyx, and flowers borne in large panicles); capsules not deeply lobed; leaves various, but not as above (if rarely orbicular, then leaves fleshy and plants of beach habitats as in Convolvulus soldanella, Ipomoea brasiliensis, and Ipomoea imperati), the petioles short or absent. | |
4 Styles 2, free or only fused basally; leaves cuneate or rounded at the base, and narrowly ovate, lanceolate, or linear in outline; [tribe Cresseae]. | |
6 Leaf blades 1-10 mm long (sometimes scale-like), corollas 5-7 mm long; [saline or alkaline habitats, TX southward] | |
6 Leaf blades 10-60 mm long (sometimes linear, but never scale-like); corolla (8-)10-100 mm long; [habitats various, collectively widespread] | |
7 Flowers (8-)10-25 mm long; leaves narrowly ovate, lanceolate, or linear, > 2× as long as wide; [widespread in our area, primarily in the Coastal Plain] | |
8 Calyx not concealed by bracts (Aniseia sometimes with 3 large outer sepals appearing superficially similar to bracts). | |
10 Capsules indehiscent (not splitting); leaves abaxially black-glandular-punctate; [uncommon non-native, s. FL] | |
13 Anthers coiled after dehiscence (making 1-4 complete 360 degree turns); fruits longitudinally or irregularly dehiscent; [tribe Merremieae]. | |
14 Leaf blades palmately lobed or compound; flowers primarily white with lighter purple or blue coloration (except Distimake tuberosus, which has yellow flowers but deeply palmately lobed leaves). | |
![]() Show caption*© Alexis López Hernández, some rights reserved (CC BY), uploaded by Alexis López Hernández |
Key K: holoparasites and holomycotrophs
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https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40730
2 Inflorescence a spike; flowers 3-merous (sepals 6, petals 0, stamens 9, carpel 1); fruit a 1-seeded fleshy drupe; fresh plants aromatic; [Basal Angiosperms]; [peninsular FL only] | |
2 Inflorescence a cymose cluster; flowers 4-5-merous (sepals 4-5, petals 4-5, stamens 4-5, carpels 2 and fused); fruit a 1-4-seeded dry capsule; fresh plants not aromatic; [Eudicots]; [widespread] | |
1 Stems erect, stiff, straight, variously colored (tan, red, violet, brown, white, pink); plants mycotrophic (or indirectly parasitic via a fungal intermediary), attached to fungi underground. | |
Key L: epiphytic angiosperms {Note that epiphytic Pteridophytes are not re-keyed here; seek them in Keys A4 and A6}
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1 Stems green or brown, with leaves (scale-like or larger). | |
2 Leaves alternate, either orbicular or oblanceolate (rounded at the apex), or scale-like, or elongate and tapering, or lanceolate-elliptic. | |
5 Leaves either scale-like or elongate and tapering (the leaves often erect and stiffened); plants with bulbous bases but lacking pseudobulbs (often, but not always with a "vase-like" appearance in which water pools); flowers radially symmetrical | |
5 Leaves lanceolate-elliptic; plants with variously-shaped bases, often bearing pseudobulbs (although not always); flowers bilaterally symmetrical, the corolla bearing a specialized lip (labellum) |