Espécie(s): P. atratum; P. chacoense; P. compressifolium;
P. conduplicatum; P. conjugatum; P. conspersum;
P. corcovadense; P. cromyorhizon; P. dilatatum; P. fasciculatum;
P. guenoarum; P. glaucescens; P. indecorum; P.
ionantum; P. jesuiticum; P. jurgensii; P. lenticulare;
P. lepton; P. lividum; P. malacophylum;P. mandiocanum;
P. maritimum; P. modestum; P. notatum; P.
oteroi; P. plicatulum; P. regnelli; P. rhodopedum; P.
rojasii; P. simplex; P. vaginatum
