Typification of the Genus Dicaryum (Verbenaceae)

John J. Pipoly III; Jon M. Ricketson

John J. Pipoly III Broward County Parks & Recreation Division
Jon M. Ricketson Missouri Botanical Garden

Keywords: Citharexylum, Dicaryum, Geissanthus, lectotypification, Primulaceae, Verbenaceae

Abstract

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.