Croton haumanianus J. Leonard , Bull. Agric. Congo Belge 48: 79. 1957

Berry, Paul E., Kainulainen, Kent & Ee, Benjamin W. van, 2017, A Nomenclator of Croton (Euphorbiaceae) in Madagascar, the Comoros Archipelago, and the Mascarene Islands, PhytoKeys 90, pp. 1-87 : 69

Croton haumanianus J. Leonard, Bull. Agric. Congo Belge 48: 79. 1957

Type.

Democratic Republic of the Congo: Yaosuka [Yangambi], 26 Sep 1947, J. Léonard 1448 (holotype: BR [BR00000889422]; isotypes: K [K000347428], YBI [YBI159606671]) .

Notes.

Croton haumanianus is known from Madagascar from a single collection, Bosser 17019 (P [P00133154]!, TAN), from the Station d’Essais “Caroline,” Ilaka-Est [Toamasina Province, south of Vatomandry]. According to Schmelzer (2007), C. haumanianus is commonly used as a shade plant in coffee and cacao plantations, which is likely the context of this report from Madagascar. No additional information is known as to whether this species has persisted in Madagascar.