Aspidosperma leucocymosum Kuhlm.

Castello, Ana Carolina Devides, Pereira, Andreza Stephanie De Souza, Shimizu, Gustavo Hiroaki, Zuntini, Alexandre Rizzo, Simões, André Olmos & Koch, Ingrid, 2022, Taxonomy and nomenclature of Aspidosperma (Apocynaceae), Phytotaxa 571 (3), pp. 239-277 : 254

Aspidosperma leucocymosum Kuhlm. in Arch. Inst. Biol. Veg. 2(1): 88. 1935.

≡ Aspidosperma leucostachys Kuhlm. ex Markgr. in Notizbl. Bot. Gart. Berlin-Dahlem 12(115): 558. 1935, nom. illeg. superfl.

Holotype:— BRAZIL. Amazonas: Rio Curicuriari , afluente do Rio Negro , margem alta, 21 Dec 1931, A. Ducke s.n. [A. Ducke [24492]] ( RB (mounted on two herbarium sheets) [barcode 00535000!, barcode 00535049!]; isotypes: F [fragment] [barcode V0092465F image!], G (mounted on two herbarium sheets) [barcode G00190818 image!], IAN [No. 50584!], K [barcode K000587695 image!], MO [barcode MO-1845735 image!], P [barcode P00645102 image!], S [No. S04-1769 image!], U [barcode U0000477 image!], US [barcode 00111803 image!]) .

Notes —Since A. leucocymosum and A. leucostachys share the same type, the oldest name has priority. Therefore, A. leucocymosum takes precedence since it was published in September 1935 ( Kuhlmann 1935), while A. leucostachys was published in December 1935 ( Markgraf 1935a) (ICN article 11.4; Turland et al. 2018).

Also, Kuhlmann (1935) indicated the gathering Ducke s.n. from the herbarium RB (RB No. 24492, as “24472” in Woodson (1951)) in the prologue of A. leucocymosum . Based on this information and the materials analyzed, we consider that the two herbarium sheets with this information in RB (RB barcodes 00535000 and 00535049) belong to a single specimen mounted on two sheets as they possess a single original label in common, received the same voucher number, and are physically kept together (ICN article 8.3, Ex. 9; Turland et al. 2018). Lastly, it is worth mentioning that the collection date indicated by Kuhlmann (1935) in the prologue of A. leucocymosum is probably incorrect (“ 21- III-1934 ”), as the date “ 21 December 1931 ” appears in the holotype and isotypes.