Ipomoea imperati |
Ipomoea cordatotriloba |
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beach morning-glory |
cotton morningglory, tie-vine |
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Habit | Perennials. | Perennials. | ||||
Stems | repent, rooting at nodes and underground. |
twining. |
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Leaf | blades lanceolate, linear, oblong, ovate, or 3–5-lobed, 15–80 × 12–60 mm, base cordate to truncate, surfaces glabrous. |
blades cordate-ovate, lance-ovate, ovate, or 3–5(–7)-lobed, 10–90 × 10–90 mm, base cordate, lobes usually rounded, sometimes pointed, surfaces usually hirsute, pilose, or tomentose, rarely glabrous. |
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Peduncles | glabrous. |
glabrous or hairy, hairs appressed. |
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Flowers | sepals lance-oblong, 10–15 mm, outers shorter than inners, ± coriaceous, apex acute to obtuse, abaxial surface glabrous; corolla white, throat usually yellow, sometimes purplish inside, funnelform, 25–50 mm. |
sepals lanceolate to ovate, 8–14 mm, chartaceous or coriaceous, outers lance-ovate to lanceolate, narrowed distal portion curved, glabrous or hairy, inners ovate, margins ciliate or not, abaxial surface glabrous or hairy; corolla lavender, tube darker, funnelform, 20–38 mm. |
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2n | = 30. |
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Ipomoea imperati |
Ipomoea cordatotriloba |
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Phenology | Flowering year-round. | |||||
Habitat | Beaches, dunes. | |||||
Elevation | 0–10 m. (0–0 ft.) | |||||
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; HI; Mexico; Central America; South America; West Indies [Introduced in Europe, Asia, Africa, Australia]
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United States; Mexico; South America
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Discussion | Ipomoea imperati was collected once in Pennsylvania (on ballast in 1865). The names I. littoralis (Linnaeus) Boissier 1875, not Blume 1826, and I. stolonifera (Cirillo) J. F. Gmelin are illegitimate; both have been misapplied to plants of I. imperati. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 3 (2 in the flora). Variety australis (O’Donnell) D. F. Austin is known from Argentina. Varieties cordatotriloba and torreyana appear to differ by minor, trivial traits; nevertheless, they have distinctive aspects and, historically, distinct ranges and habitats. Both have been dispersed by humans and may appear sporadically in places outside their historical ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 14. | FNA vol. 14. | ||||
Parent taxa | Convolvulaceae > Ipomoea | Convolvulaceae > Ipomoea | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Convolvulus imperati | |||||
Name authority | (Vahl) Grisebach: Cat. Pl. Cub., 203. (1866) | Dennstedt: Nomencl. Bot. 1: 246. (1810) | ||||
Web links |