A New Combination and Change in Rank in Polycarpon (Caryophyllaceae), Endemic to California, U.S.A., and Mexico

Duilio Iamonico

doi:10.3417/2014018

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Duilio Iamonico¹

¹Laboratory of Phytogeography and Applied Geobotany, Section Environment and Landscape, Department DPTA, Sapienza University of Rome, via Flaminia 72, I-00196 Rome, Italy. d.iamonico@yahoo.it

Abstract

The name Polycarpon depressum Nutt. (Caryophyllaceae) is here investigated and lectotypified. According to a recent molecular investigation and based on the morphology and ecology of the taxon, the new combination and change in rank for P. tetraphyllum (L.) L. subsp. depressum (Nutt.) Iamonico are proposed for these plants endemic to California, U.S.A., and northern Mexico. A description of the subspecies is provided as is a comparison with the similar taxa P. tetraphyllum subsp. tetraphyllum, P. tetraphyllum subsp. alsinifolium (Biv.) Ball, and P. tetraphyllum subsp. diphyllum (Cav.) O. Bolòs & Font Quer.

Citation Download Citation

Duilio Iamonico "A New Combination and Change in Rank in Polycarpon (Caryophyllaceae), Endemic to California, U.S.A., and Mexico," Novon: A Journal for Botanical Nomenclature 24(2), 159-164, (22 September 2015). https://doi.org/10.3417/2014018

Published: 22 September 2015

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