Ipomoea alba |
Ipomoea macrorhiza |
|
---|---|---|
moon flower, tropical white morning-glory |
large-root morning glory |
|
Habit | Perennials. | Perennials, root relatively large, tuberlike. |
Stems | twining, usually prickly, sometimes rooting at nodes. |
trailing or twining. |
Leaf | blades broadly ovate to triangular or 3–5-lobed, 50–150 × 50–150 mm, base cordate, surfaces usually glabrous, rarely hairy. |
blades ovate, triangular-ovate, or 3-lobed, 50–150 × 50–150 mm, base cordate to sagittate or truncate, margins ± crenulate, surfaces: abaxial tomentulose, adaxial glabrous, minutely beaded along veinlets. |
Peduncles | glabrous. |
tomentulose. |
Flowers | nocturnal; sepals ovate, 7–15 mm, ± coriaceous, apex acute, outers each with midrib extending as ± corniform appendage; corolla white, throat green-banded inside, salverform, 70–150 mm. |
nocturnal; sepals oblong-elliptic, 16–18 mm, coriaceous, sericeous; corolla white, throat lavender to purple inside, salverform, 50–80 mm. |
Fruits | 20–30 mm. |
|
2n | = 30. |
|
Ipomoea alba |
Ipomoea macrorhiza |
|
Phenology | Flowering Sep–May. | Flowering Jun–Jul. |
Habitat | Forest margins, swamps, moist sites. | Beaches, clearings, dunes. |
Elevation | 0–100 m. (0–300 ft.) | 0–40 m. (0–100 ft.) |
Distribution |
FL; LA; SC; TX; Mexico; Central America; South America; West Indies [Introduced in North America; introduced also in Asia]
|
AL; FL; GA; MS; NC; SC |
Discussion | Ipomoea macrorhiza has been confused with the Mexican and Central American I. jalapa (Linnaeus) Pursh; I. macrorhiza differs by having nocturnal, moth-pollinated flowers with white corollas versus matinal, bee-pollinated flowers with lavender corollas. (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 | Calonyction aculeatum, Convolvulus aculeatus | |
Name authority | Linnaeus: Sp. Pl. 1: 161. (1753) | Michaux: Fl. Bor.-Amer. 1: 141. (1803) |
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