Astropanax

Lowry Ii, Porter P., Plunkett, Gregory M., Gostel, Morgan R. & Frodin, David G., 2017, A synopsis of the Afro-Malagasy species previously included in Schefflera (Araliaceae): resurrection of the genera Astropanax and Neocussonia, Candollea 72 (2), pp. 265-282 : 267

Key to the genera Astropanax and Neocussonia

1. Ovary 2-5-carpellate, styles 2-5; leaves palmately compound or unifoliolate, apex of leaflets generally truncate to emarginate, sometimes acute ( N. bojeri and N. staufferiana ) or rounded ( N. halleana ), generally with an evident retuse notch and almost always with a small mucro or boss formed by an extension of the midvein; terrestrial trees; Madagascar, except N. lukwangulensis and N. umbellifera in continental Africa ......................................B. Neocussonia

1a. Ovary 5-9-carpellate, styles 5-9; leaves palmately compound (generally unifoliolate in A. monophyllus ), apex of leaflets acute to acuminate or caudate (rounded in A. volkensii and sometimes in A. monophyllus ), rarely if ever with a retuse notch, lacking a small mucro or boss; terrestrial or hemi-epiphytic trees, or lianas; continental Africa, except A. humblotianus , A. monophyllus and A. myrianthus in Madagascar, and A. procumbens in the Seychelles.............. .................................................................... A. Astropanax