Taxonomy and nomenclature of Aspidosperma (Apocynaceae) Author Castello, Ana Carolina Devides 0000-0002-8730-8264 Departamento de Ciências Agrárias e Naturais, Universidade do Estado de Minas Gerais, CEP 38302 - 192, Ituiutaba, MG, Brazil ana. castello @ uemg. br; https: // orcid. org / 0000 - 0002 - 8730 - 8264 & Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Rua Monteiro Lobato 255, CEP 13083 - 862, Cidade Universitaìria Zeferino Vaz, Campinas, SP, Brazil ana.castello@uemg.br Author Pereira, Andreza Stephanie De Souza Pós-graduação em Biologia Vegetal, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas & Pós-graduação em Biodiversidade, Instituto de Ciências e Tecnologia das Águas, Unidade Tapajós, Universidade Federal do Oeste do Pará - UFOPA, Rua Vera Paz s. n., CEP 68040 - 255, Santarém, PA, Brazil Author Shimizu, Gustavo Hiroaki Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Rua Monteiro Lobato 255, CEP 13083 - 862, Cidade Universitaìria Zeferino Vaz, Campinas, SP, Brazil Author Zuntini, Alexandre Rizzo Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Rua Monteiro Lobato 255, CEP 13083 - 862, Cidade Universitaìria Zeferino Vaz, Campinas, SP, Brazil & Royal Botanic Gardens - Kew, Kew Green, Richmond, Surrey, TW 9 3 AE, U. K. Author Simões, André Olmos Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Rua Monteiro Lobato 255, CEP 13083 - 862, Cidade Universitaìria Zeferino Vaz, Campinas, SP, Brazil Author Koch, Ingrid Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas - UNICAMP, Rua Monteiro Lobato 255, CEP 13083 - 862, Cidade Universitaìria Zeferino Vaz, Campinas, SP, Brazil text Phytotaxa 2022 2022-11-04 571 3 239 277 http://dx.doi.org/10.11646/phytotaxa.571.3.1 journal article 180421 10.11646/phytotaxa.571.3.1 2f0bde50-8a71-4f78-85a9-3a3b477c2590 1179-3163 7284667 Aspidosperma nitidum Benth. ex Müll.Arg. in Mart. & auct. suc., Fl. Bras. 6(1): 59. 1860. ≡ Thyroma nitida (Benth. ex Müll.Arg.) Miers, Apocyn. S. Am. : 24. 1878 . Lectotype (designated here): — BRAZIL . Amazonas : Prope Barra , Prov. Rio Negro , Jul 1851 , R. Spruce 1657 ( K [barcode K000587692 image!]; isolectotypes: BR [barcode 0000006956097 image!], E [barcode E00265001 image!], G [barcode G00169289 image!, barcode G00169290 image!], GH [barcode 00057214 image!], MO [barcode MO-2958571], NY [barcode 00297980 image!], P [barcode P00639586 image!, barcode P00639587 image!], RB [fragment] [barcode 00535066!], TCD [barcode TCD0006574 image!], W [No. 1889-0011848 image!]). B†, F negative No. 4423 image! . = Aspidosperma aquaticum Ducke in Arch. Inst. Biol. Veg. 4(1): 59. 1938 . Lectotype (designated here): — BRAZIL . Amazonas : Manaus , Rio Tarumã , margem inundada, 10 Jun 1933 , A. Ducke s.n. [A. Ducke [24570]] [ pro parte [fruiting branch and seeds]] (RB (mounted on three herbarium sheets) [barcode 00535001!, barcode 00535014!, barcode 00535148!]; isolectotypes: BM [barcode BM000952696 image!], G [barcode G00169403 image!], K [barcode K000587690 image!], NY [barcode 00297948 image!], P [barcode P00639585 image!], S [No. S04-1703 image!], U [barcode U0000485 image!], US [barcode 00111780 image!]). Notes — Müller-Argoviensis (1860a) indicated the gathering Spruce 1657 in the prologue of A . nitidum but did not cite in which herbarium the type would be deposited. Thus, we chose a specimen from this collection that belonged to the herbarium where Bentham worked as the lectotype of A . nitidum (K barcode K000587692) (ICN article 9.3; Turland et al. 2018 ). Regarding A . aquaticum , Ducke (1938) indicated the collection Ducke s.n. from the herbarium RB (RB No. 24570) in the prologue. However, since the same collection information was used for two different gatherings, corresponding to specimens with follicles (“ 10-6-1933 ”) and flowers (“ 24-7-1936 ”), we chose the gathering with follicles as the lectotype collection of A . aquaticum (ICN article 9.3; Turland et al. 2018 ). It is worth mentioning that we consider the three preparations with this information in RB (RB barcodes 00535001, 00535014, and 00535148) as a single specimen mounted on three sheets since 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 ).