Chromolaena (King & Robinson, 1970)

Ferlay, Benjamin, 2025, Neotypification and new combination for an endemic species of Martinique (Lesser Antilles) in the genus Chromolaena (Eupatorieae, Asteraceae), Phytotaxa 698 (1), pp. 51-57 : 56

Key to the species of Chromolaena in Martinique

1. Leaves linear-lanceolate to oblong-lanceolate, pointed at both ends, up to 3 cm wide ....................................................... C. ivifolia

- Leaves rounded, ovate or ovate-lanceolate, with a rounded or truncate and decurrent base, and an acute to obtuse apex, larger than 3 cm wide (rarely 2 cm in C. medullosa in very stunted individuals)................................................................................................2

2. Leaves not exceeding 6 cm long; leaf base and apex rounded........................................................................................ C. medullosa

- Leaves generally exceeding 6 cm; leaf base truncated, slightly rounded, cuneate or decurrent along the petiole, apex acute, never distinctly rounded ...............................................................................................................................................................................3

3. Leaves glabrous, venation pinnate; shrub or bush of the hygrophilous series ........................................................ C. trigonocarpum

- Pubescent leaves, venation palmate with 3 basal veins; herb or climbing shrub in ruderal habitats ................................. C. odorata