Citharexylum, Dicaryum, Geissanthus, Lectotypification, Primulaceae, Verbenaceae
The genus Dicaryum Willd. ex Roem. & Schult. was described in 1819 and does not have a type species. Two species were described, and one, D. subdentatum Willd. ex Roem. & Schult., is better selected as the type because the other species, D. serrulatum Willd. ex Roem. & Schult., is not a Verbenaceae but rather a Primulaceae-Myrsinoideae and belongs to Geissanthus Hook. f. Given the circumstances, we choose D. subdentatum as the type species of Dicaryum, which is a synonym of Citharexylum ilicifolium Kunth.
John J. Pipoly III and Jon M. Ricketson. 2018. Typification of the Genus Dicaryum (Verbenaceae) .Novon , (3) : 268 -271. https://nsuworks.nova.edu/occ_facarticles/943.