Nomenclatural and taxonomic novelties in Eriocaulaceae from the states of Rio \ud de Janeiro and Santa Catarina, Brazil

Abstract

Paepalanthus and Syngonanthus are the largest genera of the Neotropical Eriocaulaceae, and both present many \ud taxonomic and nomenclatural problems. Based on field observations and detailed analysis of type collections, we suggest \ud nomenclatural and taxonomic changes to solve the problems regarding six species occurring in Rio de Janeiro and Santa \ud Catarina. We propose species status (i.e., P. kleinii) for Paepalanthus leiseringii var. kleinii and five taxa are newly \ud synonymized: P. bradei (=P. macaheensis), P. gounelleanus (=P. pseudotortilis), P. tortilis var. glaberrimus (= P. tortilis), \ud S. caulescens var. angustifolius (=S. caulescens), and S. caulescens var. proliferus (=S. caulescens). We provide \ud comments on morphology and citation of type collections for all taxa. For Paepalanthus leiseringii var. kleinii we also \ud provide illustrations and a protologue.We would like to thank the curators of the herbaria B, C, G, HB, K, OXF, P, R, RB, UPS and US for access to their Eriocaulaceae collections. We are especially indebted to Dr. Robert Vogt, curator of B herbarium, for the loan of specimens. Financial support was provided to M. Trovó by the Alexander von Humboldt Foundation, UFRJ (ALV 2013), FAPERJ (E-26/112.476 – INST; E-26/110.031/2011 – BIOTA), CNPq (proc. 470349/2013-1), to L. Echternacht by FAPESP (proc. 08/54886-1) and CAPES, and to P.T. Sano by CNPq (proc. 307100/2009-0)