The genus Radula Dumort. (Radulaceae, Marchantiophyta) in Brazil

A taxonomic study of the liverwort genus Radula in Brazil based on morphological characters and on examination of types and over 1000 additional collections, leads to the recognition of 31 species and two varieties. A key to all species as well as descriptions, illustrations and comments on recognition, distribution and habitat of the recognized species are provided. One new species, R. renneri, is described and illustrated. Radula longiloba, R. punctata and R. xalapensis are new records for Brazil whereas the occurrence of R. pseudostachya and R. subinflata in Brazil is confirmed. Radula elliottii, R. varilobula and R. wrightii are excluded from the country and R. marginate, R. microloba and R. saccatiloba are doubtful records. Several new lectotypifications [for R. flaccida, R. epiphylla (= R. flaccida), R. quadrates, R. stenocalyx, R. tectiloba and R. tenera] and one new neotypification (for R. yanoella) are proposed. Radula obovata is proposed as a new synonym of R. pallens.

Automated summary

Taxonomic study of the liverwort genus Radula in Brazil identified 31 species and two varieties, with new species and new records found. The research also provided key characteristics, descriptions, and illustrations of the recognized species, as well as proposed new typifications and synonyms.