Astrocaryum horridum Barbosa Rodrigues 1891

11. Astrocaryum horridum Barbosa Rodrigues (1891a: 104). Type:— BRAZIL. Rio Javary [Javari], s.d., Barbosa Rodrigues (“Herb. Mus. Bot. Amaz. n. 720”—probably destroyed). Neotype [designated by Glassman (1972: 17) as “type”, here corrected]:—Illustration in Barbosa Rodrigues (1903b: Tab. 81A). = Astrocaryum javarense (Trail 1877: 77) Drude (1881: 372). Notes:— Kahn & Millan (1992), Henderson et al. (1995), and POWO (2024) list Astrocaryum horridum as a synonym of Astrocaryum javarense. In the protologue, Barbosa Rodrigues (1888) mentioned a single specimen collected on “Rio Javari” and deposited in the Museu Botânico do Amazonas herbarium. To address that this material was lost (Porto 1892, Prance 1971, Mori & Ferreira 1987), Glassman (1972) designated the illustration (Fig. 8) in Barbosa Rodrigues’ renowned work Sertum Palmarum Brasiliensium from 1903 as the “type” (Barbosa Rodrigues 1903b). Considering no other original material was discovered during our thorough investigation, we recognize Glassman’s designation of the illustration as a neotype.