]> Aponogeton henkelianus Baum, Gartenwelt 10: 593. 1905; Astrophytum myriostigma var. quadricostatum (Möller) Baum, Kakteenkunde 1933: 205. 1933. [collector note: SW Africa (Zambesi exped.); B, BM, BR, BRSL, COI, E, HBG, K, M, PRE, S, W, Z] Botany Baum, Hugo Baum, Hugo H. Baum Baum Hugo Baum 1866 1950