1	Inflorescence unbranched and the flowers appearing fasciculate on short shoots; corolla lobes campanulate to spreading	Solanum guineense
–	Inflorescence branched, usually many times so (sometimes appearing spicate when branches very short); corolla lobes spreading to or reflexed	2
2	Stems strongly quadrangular; leaves fleshy and usually somewhat lobed; plants of coastal habitats	Solanum africanum
–	Stems terete; leaves not fleshy, not lobed on reproductive stems; plants of forests and forest edges	3
3	Fruit bright red, globose to elongate; seeds with conspicuous “hairs”; corolla lobed nearly to the base; flowers not heterostylous, densely clustered on inflorescence branches	Solanum terminale
–	Fruit black or purplish black, globose; seeds without conspicuous “hairs”; corolla lobed only halfway to the base; flowers heterostylous, evenly and widely spaced on inflorescence branches	Solanum runsoriense