2. Merremia dissecta (Jacquin) Hallier f., Bot. Jahrb. Syst. 16: 552. 1893. (as disecta).
[F]
Alamo vine, noyau vine
Convolvulus dissectus Jacquin, Observ. Bot. 2: 4, plate 28. 1767; Ipomoea sinuata Ortega; Operculina dissecta (Jacquin) House
Stems sparsely hirsute or glabrous. Leaf blades ± polygonal, palmately (5–)7(–9)-lobed, 40–70 × 40–100 mm; lobes ± lance-elliptic, margins usually irregularly pinnati-sinuate, sometimes crenate or dentate, surfaces usually glabrous, sometimes sparsely hairy. Inflorescences: flowers usually solitary, rarely 2–3+-flowered cymes. Flowers: sepals oblong, 18–25 mm, apex mucronate, abaxial surface glabrous; corolla white with purplish throat, 30–45 mm. 2n = 32 (Asia).
Flowering Apr–Nov. Disturbed or open sites, roadsides; 0–700 m; Fla., Ga., Tex.; Mexico; West Indies; Central America; South America; introduced in Asia, Africa, Australia.
Merremia dissecta has been reported from Alabama, Arizona, Louisiana, Mississippi, and Pennsylvania based on single records and/or cultivated plants; it is apparently not established in those states.
SELECTED REFERENCE Austin, D. F. 2007. Merremia dissecta (Convolvulaceae)—A condiment, medicine, ornamental, and weed—A review. Econ. Bot. 61: 109–120.
