Revision of Richardia (Rubiaceae)

1 July 1974

journal article
Published by Springer Nature in Brittonia

Vol. 26 (3) , 271-301
https://doi.org/10.2307/2805730

Abstract

A systematic treatment is given for the known species ofRichardia L. with keys, synonymies, descriptions, photographs, typifications, and range maps and/or citations of specimens. The 15 species ofRichardia are grouped into two sections: sect.Richardia with four species from the southern United States to Peru, Argentina, and Brazil; and sect.Asterophyton (K. Schum.) Lewis & Oliver with 11 species having disjunct distributions in three areas: Texas-Mexico, Cuba, and central South America. New combinations areR. tricocca subsp.tetracocca (Mart. & Gal.) Lewis & Oliver,R. muricata subsp.pectidifolia (Urban) Lewis & Oliver,R. arenicola (Britton & Wilson) Lewis & Oliver, andR. ciliata (Britton & Wilson) Lewis & Oliver. Two new species are described:R. boliviensis Lewis & Oliver andR. schumannii Lewis & Oliver.

Keywords

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