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Revision of Richardia (Rubiaceae)

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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.

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Authors and Affiliations

  1. Department of Biology, Washington University, and the Missouri Botanical Garden, St. Louis

    Walter H. Lewis & Royce L. Oliver

Authors
  1. Walter H. Lewis
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  2. Royce L. Oliver
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Recipient of the B. A. Krukoff Fellowship in Systematics, Missouri Botanical Garden, 1971.

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Lewis, W.H., Oliver, R.L. Revision of Richardia (Rubiaceae). Brittonia 26, 271–301 (1974). https://doi.org/10.2307/2805730

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