Astrocaryum princeps var. aurantiacum , Barbosa Rodrigues 1888

7. Astrocaryum princeps var. aurantiacum Barbosa Rodrigues (1888: 49). Type:—not designated and no specimens cited. Neotype [designated by Glassman (1972: 19) as “type”, here corrected]:—Illustration in Barbosa Rodrigues (1903b: Tab. 79B). = Astrocaryum tucuma. Notes:—All four varieties of Astrocaryum princeps (var. aurantiacum, var. flavum, var. sulphureum, and var. vitellinum) described by Barbosa Rodrigues are synonyms of Astrocaryum tucuma (Kahn & Millán 1992, POWO 2024). In the case of Astrocaryum princeps var. aurantiacum, Barbosa Rodrigues (1888) did not designate a type, and no other original material is cited in the protologue. Glassman (1972) designated an illustration (Fig. 7) published decades later by Barbosa Rodrigues (1903b) as the type for this variety. Given that we did not find other original material of this taxon, it is essential to confirm Glassman’s designation of the Barbosa Rodrigues illustration as the neotype, following the Code of Nomenclature for algae, fungi, and plants (Turland et al. 2018).