Synopsis and taxonomic novelties of Peperomia (Pipe- raceae) from Argentina

Abstract

This synopsis of the Argentinean species of Peperomia includes 35 taxa, 10 excluded names (P. alata, P. blanda, P. boliviensis, P. effusa, P. hilariana, P. hispidula var. hispidula, P. rhombea, P. rusbyi, P. serpens and P. silvarum), and nine new synonyms (P. misionense under P. arifolia; P. comarapana f. pubescens under P. comarapana; P. mandonii, P. mandonii var. excelsis, P. umbelliformis, P. nonhispidula under P. crystallina; P. lilloi and P. sanpedritoi under P. santaelisae and P. subpubistachya under P. urocarpa). Four new species are cited for the Argentinean flora (P. crystallina, P. diaphanoides, P. increscens and P. trineuroides). Twenty names were lectotypified and one was neotypified. Treatment of each entity includes synonymy, iconography, vernacular names, distribution and habitat, observations and representative specimens examined. A key to the identification of the taxa and illustrations are also provided.