Regresar

Rubiacearum Americanarum magna hama pars XXIX: Overview of the Neotropical genus Schizocalyx (Condamineeae) and description of two new species

Abstract:

The genus Schizocalyx Wedd. was originally monotypic, but has been recently expanded based on molecular analysis to comprise six species, including four transferred from Bathysa C. Presl, where they were incorrectly classified, and two transferred from Phitopis Hook. f., which is now a synonym. Schizocalyx is now characterized by its calyptrate stipules, corollas with the lobes convolute in bud, capsules that are loculicidal across the apical part, and numerous flattened to angled seeds, as detailed in a revised genus description. This genus is now known from southern Central America through western South America and into central and southeastern Brazil. The nine species keyed here include the seven species previously described, for which nomenclature and range are summarized, and two species newly described here: S. condoricus D. A. Neill & C. M. Taylor, found in the eastern Andean foothills of southern Ecuador and previously confused with S. peruvianus (K. Krause) Kainul. & B. Bremer; and Schizocalyx truncatus C. M. Taylor, found in the eastern Andean foothills of central Peru and previously confused with S. obovatus (K. Schum. ex Standl.) Kainul. & B. Bremer. Lectotypes are selected for S. cuspidatus (A. St.-Hil.) Kainul. & B. Bremer and S. multiflorus (Hook. f.) Kainul. & B. Bremer.