Astrocaryum princeps Barbosa Rodrigues 1875

3. Astrocaryum princeps Barbosa Rodrigues (1875: 22). Type:— BRAZIL. s.l., s.d., Barbosa Rodrigues (“Barb. Rod. hb. Palm. n. 219”—probably destroyed). Neotype [designated by Wessels Boer (1965: 126) as “lectotype”, here corrected]:—Illustration in Barbosa Rodrigues (1903b: Tab. 73). = Astrocaryum tucuma Martius (1824: 77). Notes:— Astrocaryum princeps, included as a synonym of Astrocaryum tucuma by Kahn & Millan (1992), Henderson et al. (1995) and Kahn (2008), was described by Barbosa Rodrigues (1875) based on a specimen he collected and deposited in his collection “Barb. Rod. hb. Palm.” The specimen was deposited in the Museu Botânico do Amazonas herbarium and likely destroyed after the museum closed (Porto 1892, Prance 1971, Mori & Ferreira 1987). Isotypes of the material were not found, and the protologue does not cite any other original material. However, a few years after the species was published, Barbosa Rodrigues (1903b) included an illustration of the taxon (Fig. 3), which was later designated as the “ lectotype ” by Wessels Boer (1965). Here, we recognize this illustration as a neotype (see Art. 9.8 and 9.10).