, Volume 38, Issue 4, pp 420-426

A new species of cymopterus (Umbelliferae) from northwestern Wyoming

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Abstract

Cymopterus evertii, from Park and Hot Springs counties, Wyoming, is described as new. It appears to be a derivative taxon from what has been calledC. bipinnatus. Data are presented justifying the relegation of the latter name to synonymy underC. nivalis. A key is provided for distinguishingC. evertii from its presumed closest relatives.