California, a new genus of Geraniaceae endemic to the southwest of North America

[摘要] Morphological data provide evidence for the separation ofErodium macrophyllumHook. & Arn. in a new genus, different from eitherErodiumandMonsonia(Geraniaceae). Also cpDNA sequence data (rrnL-F) support this view. Thus, we propose the recognition of a new monotypic genus,CaliforniaAldas., C. Navarro, P. Vargas, Ll. Saez & Aedo, to better reflect phylogenetic relationships in Geraniaceae. We provide diagnosis, illustrations, comparative analysis of distinctive characters, and a key to genera of Geraniaceae. The new combination proposed is:California macrophylla(Hook. & Am.) Aldas., C. Navarro, P. Vargas, Ll. Saez & Aedo,comb. Nov . [basion.:Erodium macrophyllumHook. & Am.]; and two lectotypes are designed.

[学科分类] 植物学

[关键词] taxonomy;morphology;Geraniaceae;Erodium;Monsonia;new genus;North America