Aspidosperma myristicifolium (Markgr.) Woodson in Ann. Missouri Bot. Gard. 38(2): 169. 1951.

≡ Geissospermum myristicifolium Markgr. in Pilg. in Notizbl. Bot. Gart. Berlin-Dahlem 11(108): 787. 1933.

Lectotype (designated by Morales & Zamora in Phytoneuron 2017–68: 10. 2017):— ECUADOR. Guayas: Guayaquil, 1799, J.J. Tafalla s.n. [H. Ruiz & J.A. Pavón s.n.] (MA [barcode MA814484 image!]; isolectotypes: G [barcode G00169359 image!], MA [barcode MA814485 image!, barcode MA814486 image!]) .

= Aspidosperma elatum Little in J. Wash. Acad. Sci. 38: 105. 1948. Holotype:— ECUADOR. Los Ríos: Pichilingue, camp at Río Macul, 25 May 1943, E.L. Little 6517 (US [barcode 00111791 image!]; isotypes: K [barcode K000587710 image!], MO [barcode MO-3147452, barcode MO-3147453], NY [barcode 00297964 image!], US [barcode 01094912 image!]).

= Aspidosperma megaphyllum Woodson in Ann. Missouri Bot. Gard. 38(2): 168. 1951. Holotype:— BRAZIL. Acre: Near mouth of Rio Macauhan, tributary of Rio Yaco, 24 Aug 1933, B.A. Krukoff 5639 (MO [barcode MO-2958631 image!]; isotypes: K [barcode K000587683 image!], G (mounted on two herbarium sheets) [barcode G00169360 image!], M [barcode M-0183519 image!], NY [barcode 00297976 image!], S [No. S04-1787 image!], U [barcode U0000481 image!]), syn. nov.

Notes —After analyzing specimens of A. megaphyllum and A. myristicifolium, we verified that both present long leaves (> 15 cm long) with eucamptodromous venation, rigid inflorescence axis, flowers with calyx lobes varying from four to five, entirely tomentose ovary, and sessile follicles, and membranaceous seeds. So, we consider A. megaphyllum as a synonym of A. myristicifolium .