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

• Duilio Iamonico ^[1]
  1. [1] Università de Roma La Sapienza

     Università de Roma La Sapienza

     Roma Capitale, Italia

     
• Localización: Novon: a journal for botanical nomenclature, ISSN 1055-3177, Vol. 24, Nº. 2, 2015, págs. 159-164
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • 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.