Ipomoea imperati |
Ipomoea hederacea |
|
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beach morning-glory |
ivy morning-glory, ivy-leaf morning-glory |
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Habit | Perennials. | Annuals. |
Stems | repent, rooting at nodes and underground. |
twining. |
Leaf | blades lanceolate, linear, oblong, ovate, or 3–5-lobed, 15–80 × 12–60 mm, base cordate to truncate, surfaces glabrous. |
blades ± orbiculate, ovate, or 3–5-lobed, not palmatisect, 50–120 × 50–120 mm, base cordate, basal lobes ± pointed, surfaces hairy. |
Peduncles | glabrous. |
hairy, hairs retrorse. |
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, 12–24 mm, herbaceous, proximally ovate, abruptly narrowed to ± curved or spreading distal portion notably longer than dilated base, abaxial surface, at least proximal 1/3, hirsute to hispid; corolla light blue, tube white or pale yellow inside, funnelform, 20–37(–45) mm, limb 17–35 mm diam. 2n = 30. |
2n | = 30. |
|
Ipomoea imperati |
Ipomoea hederacea |
|
Phenology | Flowering year-round. | Flowering May–Nov. |
Habitat | Beaches, dunes. | Abandoned plantings, disturbed sites, gravel bars, roadsides. |
Elevation | 0–10 m. (0–0 ft.) | 10–1900 m. (0–6200 ft.) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TX; HI; Mexico; Central America; South America; West Indies [Introduced in Europe, Asia, Africa, Australia]
|
AL; AR; AZ; CA; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; ND; NE; NH; NJ; NM; NY; OH; OK; PA; SC; SD; TN; TX; VA; WI; WV; ON; Mexico; South America; introduced in Europe; Africa; Pacific Islands (New Zealand); Australia
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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.) |
Leaf shape in Ipomoea hederacea, and, perhaps, in other ipomoeas, is under simple genetic control and is useless for recognition of varieties (C. D. Elmore 1986). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Convolvulaceae > Ipomoea | Convolvulaceae > Ipomoea |
Sibling taxa | ||
Synonyms | Convolvulus imperati | I. hederacea var. integriuscula, Pharbitis barbigera |
Name authority | (Vahl) Grisebach: Cat. Pl. Cub., 203. (1866) | Jacquin: Collecteana 1: 124, plate 36. (1787): Icon. Pl. Rar., plate 36. (1787) |
Web links |
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