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A new species of Uncinia (Cyperaceae) from the New World and the first report of U. Chilensis from Argentina Darwiniana
Wheeler,Gerald A..
A new species of Uncinia (Cyperaceae), U. austroamericana, is described and illustrated from austral South America and from the Tristan da Cunha archipelago in the south-Atlantic Ocean. This species grows in persistently wet, base-poor sites, particularly in Sphagnum bogs, and is known from southern Patagonia, Tierra del Fuego, and from the largest island of the Tristan da Cunha group. It differs both morphologically and ecologically from the similar-appearing U. macrolepis, a minerotrophic species best known from moist depressions in grasslands. The new species differs morphologically from U. macrolepis by possessing achenes that, when mature, are pale-colored and conspicuously-thickened at the apex and, also, by having more or less loosely-flowered...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Argentina; Chile; Tristan da Cunha; Cyperaceae; Uncinia.
Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932005000100017
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Carex and Uncinia (Cyperaceae, Cariceae) from the Juan Fernández archipelago, Chile Darwiniana
Wheeler,Gerald A..
Ten members of the tribe Cariceae (Cyperaceae) occur on the Juan Fernández Archipelago: four species of Carex and six of Uncinia. Eight of the ten species occur on Alejandro Selkirk Island (= Masafuera; 50 km2) while four are known from Robinson Crusoe Island (= Masatierra; 48 km2). Carex fernandezensis, C. stuessyi, Uncinia aspericaulis, and U. macloviformis are newly described from the archipelago and all are endemic to the islands. Only two species, Carex berteroniana and Uncinia douglasii, both endemics, are of frequent occurrence and each occurs on both islands. Another endemic, Uncinia costata, is known only from the type locality on Alejandro Selkirk. The three remaining species, Uncinia phleoides, U. tenuis, and Carex phalaroides, the last here...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alejandro Selkirk Island; Carex; Juan Fernández Archipelago; Robinson Crusoe Island; Section Pellucidae; Taxonomy; Uncinia.
Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932007000100011
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Carex sagei (Cyperaceae), the correct name for C. barrosii Darwiniana
Wheeler,Gerald A..
The holotype of Carex sagei comes from central Chile, and this name has long been treated as a synonym of C. fuscula. Recent study indicates, however, that C. sagei is referrable to Carex section Ceratocystis, whereas C. fuscula belongs in section Spirostachyae. It is also demonstrated that C. sagei is the correct name for plants currently called C. barrosii. Carex sagei is known from Argentina, Chile, and the Falkland Islands (Islas Malvinas), where it frequents hydric habitats, such as marshes, wet meadows, and the margins of lakes, from near sea level to about 850 m.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carex; Cyperaceae; Ceratocystis; South America; Taxonomy.
Ano: 2007 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932007000200010
Registros recuperados: 3
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