Eremolaena

Lowry Ii, Porter P., Haevermans, Thomas, Labat, Jean-Noël, Schatz, George E., Leroy, Jean-François & Wolf, Anne-Elizabeth, 2000, Endemic families of Madagascar. V. A synoptic revision of Eremolaena, Pentachlaena and Perrierodendron (Sarcolaenaceae), Adansonia (3) 22 (1), pp. 11-31 : 14

Key to the species of Eremolaena

1. Leaves subcoriaceous, largest blades at least 9 cm long, secondary and tertiary venation distinctly raised on abaxial surface; sepals 15-19 mm long at anthesis; flowers borne in pairs, subtended by 5 small, scale-like involucral lobes; humid and subhumid forest on laterite, Betampona RNI, Lac Alaotra region, and Brickaville to Vatomandry ................................................................................................................ 1. E. humblotiana

1’. Leaves chartaceous, largest blade not exceeding 5(-6) cm long, secondary and tertiary venation weakly raised on abaxial surface; sepals 9-12 mm long at anthesis; flowers borne singly, subtended by a very small, 3-lobed collar; littoral forest on sand, Masoala PN to Ft. Dauphin area ........................................ 2. E. rotundifolia