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Project Name Data (Last Modified On 5/31/2013)

Flora Data (Last Modified On 5/31/2013)
Species Ipomoea macrantha Roem. & Schult.
PlaceOfPublication L., Syst. Veg., ed. nov. 4: 251. 1819.
Note TYPE: Based on I. longiflora R. Br.
Synonym Convolvulus tuba Schlecht., Linnaea 6: 735. 1831. TYPE: St. Thomlas, Ehrenberg (not seen). Ipomoea tuba (Schlecht.) G. Don, Gen. Syst. 4: 271. 1838 Ipomoea longiflora R. Br., Prodr. 1: 484. 1810, non Willd. (1809) TYPE: Australia, Queensland, Brown 2741 (BM, not seen). Ipomoea violacea L., Sp. PI. 161. 1753. Typification recondite.
Description Vines; stems twining over low beach plants, perennial, glabrous. Leaves broadly ovate to reniform-ovate, 8-16 cm long, usually entire, cordate basally, acute to broadly acuminate apically, glabrous. Flowers usually solitary but occasionally 2-3 in a cymose inflorescence; sepals ovate to ovate-elliptic, 1.5-2.5 cm long, obtuse apically, glabrous; corolla white, the tube 6-8(-10) cm long, the limb campanulate to rotate. Capsules tardily dehiscent, ovoid to subglobose, 2-2.5 cm in diameter; seeds dark brown, pubescent with short stiff trichomes.
Habit Vines
Distribution pantropical species
Note flowers from August to December. Ipomoea macrantha is not closely related to the others in the Calonyction group; it is placed here for convenience. The actual affinity of the species is uncertain, but some data indicate possible alliance with I. pes-caprae. Ipomoea macrantha apparently represents the result of evolution onto a moth pollination syndromes convergent with the Calonyction group.
Specimen SAN BLAS: Beach E of Puerto Obaldia, Croat 16915 (MO). Irandi, Duke 6513 (MO). Isla Soskatupo, Duke 8516 (MO). Isla Mosquito, Duke 8871, 8930 (both MO). Guadia-Tupo, Dwyer 6863, 6866 (both MO). Soskatupu, Elias 1686 (MO). Near Ailigandi, Lewis et al. 215 (MO). Around Puerto Obaldia, Pittier 4391 (F, US).
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