[irn: 13792]

  • Authority

    Balslev, Henrik. 1996. Juncaceae. Fl. Neotrop. Monogr. 68: 1-167. (Published by NYBG Press)

  • Family

    Juncaceae

  • Scientific Name

    Patosia

  • Type

    Type species. Patosia clandestina (Philippi) Buchenau.

  • Description

    Genus Description - Perennial, cushion-forming, glabrous herbs. Stems more or less regularly forked, dying back from the base, densely covered with persisting wilted leaves. Leaves regularly, densely, and alternately inserted along the stem. Blade equal to or slightly shorter than the sheath, flat or canaliculate, usually finely dentate along the margin. Inflorescence reduced to a single, lateral, subapical flower. Plants dioecious or rarely with a few perfect flowers. Tepals linear to lanceolate. Staminate flowers long pedicellate, lifted above the cushion, surrounded by one clasping bracteole at the base; stamens 6, with long, linear, mucronate anthers on short filaments. Pistillate flowers sessile in axil of a subapical leaf; ovary sessile; style long, filiform, with 3 filiform, papillose stigmas. Capsule triseptate, sessile. Seeds many. The name Patosia is derived from ‘Los Patos,’ the type locality of Rostkovia ? clandestina Philippi, which is the basionym of Patosia clandestina (Philippi) Buchenau.

  • Discussion

    Taxonomic History of Patosia

    The only species of Patosia was originally placed in Rostkovia with some doubt (Philippi, 1857). Two available collections were named Rostkovia ? clandestina and Rostkovia ? brevifolia by Philippi. Grisebach (1879) treated them as one species, Oxychloe brevifolia, and Buchenau (1879) also treated them as one species, but under the name Distichia clandestina. Later Buchenau (1890) erected the genus Patosia with one species, P. clandestina. Hauman (1915) placed that species in Oxychloe as O. clandestina. Castillon (1926) described P. tucumanensis and Barros (1953) reduced this to a variety of P. clandestina. I have found no evidence indicating that this entity is anything more than one species without varieties.

  • Distribution

    Patosia includes one species in the Andes from Bolivia to Nequén in Argentina.

    Bolivia South America| Chile South America| Argentina South America|