Eperua oleifera Ducke (1932: 728) var. oleifera

Fortes, Elenice A. & Mansano, Vidal F., 2022, Untangling nomenclatural issues of some Amazonian trees of Eperua Aubl. (Leguminosae, Detarioideae, Detariae), Phytotaxa 542 (2), pp. 189-198 : 194

Eperua oleifera Ducke (1932: 728) var. oleifera

Lectotype (designated by Cowan 1975): — BRAZIL. Amazonas : Borba, Rio Madeira, 16 January 1930, W.A. Ducke RB23290 (R[000028782]!, isolectotypes F-frag.[0057804] image!, G not seen, INPA [0234506]!, K[000555093] image!, K[000858688] image!, NY[00004382] image!, NY[00004383] image!, NY[01185435] image!, P[00252888] image!, RB sheet I[00585686]!, & sheet II[00539606]!, S collection number S-R-8709 image!, U[0003233] image!, US[00001149] image!).

Residual syntypes:— BRAZIL. Amazonas : Maués, Lago Massauary, 18 December 1927, W.A. Ducke s.n. RB20217 (RB sheet I[00539607]!, sheet II[00585687]!, & sheet III[00585688]!) .

Ducke (1932) described E. oleifera listing two of his unnumbered collections and their respective RB old acronym and collection number “H.B.R.J. n 23.290 ”, and “H.B.R.J. n 20.217 ”. Then, it is unclear which collection is the holotype, making it necessary to select a lectotype. The lectotypification made by Cowan (1975) is correct since he chose as lectotype one of the isosyntypes, Ducke s.n. RB 23290 at R.