Ipomoea imperati |
Ipomoea cairica |
|
---|---|---|
beach morning-glory |
cairo morning glory, mile-a-minute vine |
|
Habit | Perennials. | Perennials. |
Stems | repent, rooting at nodes and underground. |
usually twining, sometimes trailing. |
Leaf | blades lanceolate, linear, oblong, ovate, or 3–5-lobed, 15–80 × 12–60 mm, base cordate to truncate, surfaces glabrous. |
blades orbiculate to ovate, 30–100 × 30–100 mm overall, palmatisect, lobes 5 (proximal 2 sometimes 2-lobed), lance-elliptic, lanceolate, or lance-ovate, (5–)10–25(–70) × (3–)8–15(–30) mm, apex acute to obtuse, surfaces glabrous. |
Peduncles | glabrous. |
glabrous; pedicels straight, 10–25 mm. |
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 oblong to ovate, 4–6.5(–9) mm, outers slightly shorter than inners, chartaceous, margins scarious, apex obtuse to acute; corolla lavender-blue or white, throat purplish-red, funnelform, 45–60 mm. |
2n | = 30. |
= 30. |
Ipomoea imperati |
Ipomoea cairica |
|
Phenology | Flowering year-round. | Flowering Mar–Oct. |
Habitat | Beaches, dunes. | Abandoned plantings, disturbed sites. |
Elevation | 0–10 m. (0–0 ft.) | -20–200 m. (-100–700 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; CA; FL; LA; Africa [Introduced in North America; introduced also in Mexico (Oaxaca), West Indies, South America]
|
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.) |
|
Source | FNA vol. 14. | FNA vol. 14. |
Parent taxa | Convolvulaceae > Ipomoea | Convolvulaceae > Ipomoea |
Sibling taxa | ||
Synonyms | Convolvulus imperati | Convolvulus cairicus |
Name authority | (Vahl) Grisebach: Cat. Pl. Cub., 203. (1866) | (Linnaeus) Sweet: Hort. Brit., 287. (1826) |
Web links |