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(Last Modified On 5/31/2013)
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(Last Modified On 5/31/2013)
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Species
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Ipomoea alba L.
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PlaceOfPublication
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Sp. P1. 161. 1753.
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Note
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LECTOTYPE: India, Rheede, Hort. Ind. Malabarii t. 50, figs. 1 & 2. 1692 (designated by Gunn 1972).
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Synonym
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Ipomoea bona-nox L., Sp. P1., ed. 2. 228. 1762. Nom nov. for I. alba L. Calonyction aculeatum (L.) House, Bull. Torrey Bot. Club 31: 590. 1904. Convolvulus aculeatus L., Sp. P1. 155. 1753. TYPE: in herb. Pluk. (BM, not seen).
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Description
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Vines; stems herbaceous at the tips, becoming woody at the base, smooth or often with short fleshy prickles, occasionally rooting near the nodes, glabrous. Leaves rounded ovate, entire or 3-5-lobed, 5-15 cm long, basally cordate, apically acuminate, glabrous. Flowers in 1- to several-flowered cymes, inflorescences and peduncles glabrous; sepals fleshy, ovate to elliptic, 10-20 mm long, apically a A recently observed fruiting collection from Venezuela shows that I. squiamosa is indeed a member of the Eriospermum group.
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Habit
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Vines
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Description
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caudate at least on the outer sepals; corolla white with greenish nectar-guides, the tube 9-15 cm long, the rotate limb 8-10 cm broad. Fruits capsular, ovoid to subglobose, 2-3 cm long, 1-2 cm in diameter, with a 7-10 mm apiculus, mostly dark brown, glabrous; seeds dark brown to black, 8-10 mm long, glabrous.
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Note
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Ipomoea alba usually flowers throughout the year with an apparent peak from November to January.
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Distribution
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pantropical in distribution.
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Note
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Flowers of this species open rapidly at night and remain open until shortly after dawn. They are commonly visited by moths, particularly Manduca sexta, as they are adapted for moth pollination. The salverform, white corollas, and caudate sepals tips distinguish the species.
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Specimen
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BOCAS DEL TORO: Near Chiriqui Lagoon, Water Valley, Wedel 1523, 1645 (both MO, US). CANAL ZONE: Between Gorgona and Mamei, Pittier 2244 (US). COCLE: 10 mi. E of Nata at Rio Grande, Godfrey 5227 (MO). DARIEN: Rio Tuira between Rio Paya and Rio Aspave, Gentry 4428 (MO). Rio Pirre, trail up river along Rio Pirre from house of Bartata, Kennedy 2871 (MO). Trail between Cana and Boca de Cupe, Stern et al. 679 (US). Tucuti, Chepyana, Terry & Terry 1398 (MO). HERRERA: Road from Chitre to Divisa, Burch et al. 1358 (MO). PANAMA: Las Delicias, Carleton 229 (US). Sabanas near Chepo, Hunter & Allen 8 (MO).
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