Abstract
A new tree species of Hymenaea L. (Detarioideae, Leguminosae) from Costa Rica, named H. osanigraseminae, was validly published by Aguilar Fernández, Poveda Álvarez & Santamaría-Aguilar (2018) on March 28, 2018. The intention of the authors was to include in the specific epithet a mention of the type locality as well as the color of the seeds. Nevertheless, their final choice (“osanigraseminae”) was wrong, since this epithet does not follow the grammatical Latin rules. Consequently, an orthographical correction is required in accordance with the articles 23.5, 32.2, and 60.1 of the International code of nomenclature for algae, fungi, and plants (Turland et al. 2018).