World checklist of Geranium L. ( Geraniaceae)

Abstract

A checklist of the genus Geranium L. (Geraniaceae) is presented. Four hundred and twenty three species are recognized in 3 subgenera and 18 sections. Our classification differs from Yeo's only in some aspects of subg. Erodioidea and Geranium. Section Brasiliensia is included in subg. Erodioidea, and sect. Neurophyllodes, Paramensia and Azorelloida in subg. Geranium. Section Azorelloida is proposed as an avowed substitute (nom. nov.) for sect. Petraea R. Knuth, nom. illeg. G. collae is proposed as avowed substitute (nom. nov.) for G. intermedium Colla, nom. illeg. An identification key to subgenera and sections is presented. A thorough revisión of available ñames in the genus, and a review of their nomenclatural status were carried out. Correct ñame, place of publication and distribution are given for each species. Geographical distríbutions are given at región and botanical country levéis following the International Working Group on Taxonomic Databases (TDWG) standard. When possible, selected references with relevant information are also included.