5. Astrocaryum yauaperyense Barbosa Rodrigues (1888: 48) .

Type:— BRAZIL. Prov. Amazonas [Amazonas state]: flum.Yaupery [Jauaperi] ad Rio Negro, s.d., Barbosa Rodrigues (“Herb. Mus. Bot.Amaz.n. 141”—probably destroyed) . Neotype [designated by Glassman (1972: 21) as “type”, here corrected]:—Illustration in Barbosa Rodrigues (1903b: Tab. 80A) .

= Astrocaryum murumuru Martius (1824: 70) .

Notes:— Astrocaryum yauaperyense is a synonym of Astrocaryum murumuru according to Kahn & Millán (1992) and POWO (2024). In the protologue of A. yauaperyense, Barbosa Rodrigues (1888) only mentioned a single specimen collected from “Rio Jauaperi to Rio Negro” in the Amazonas province and deposited in the Museu Botânico do Amazonas herbarium (Porto 1892, Prance 1971, Mori & Ferreira 1987). Glassman (1972) designated the illustration (Fig. 6) of the species featured in Barbosa Rodrigues’ renowned work Sertum Palmarum Brasiliensium from 1903 as the “type” ( Barbosa Rodrigues 1903b). Considering the absence of any other original material found during our search, we confirm Glassman’s designation of the illustration as a neotype.