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A New Species and a New Record of Porphyra (Bangiales, Rhodophyta) from Argentina

A New Species and a New Record of Porphyra (Bangiales, Rhodophyta) from Argentina A new species ofPorphyra,P. argentinensis sp. nov., is described and illustrated; it has the same life history as R sanjuanensis Krish., but differs in the form and colour of the thallus, the arrangement of the spores and the geographic distribution. P. pujalsii Coll et Oliveira Filho is mentioned for the first time for Argentina. Introduction According to Pujals (1963,1977) seven species of Forphyra were mentioned for Argentine coasts: P. atropurpurea (Olivi) De Toni, P. capensis Kutz.,P. columbina Mont., P. umbilicalis (L.) .,. woolhousiae Harv., P. endiv folium (A. et E. S. Gepp) Chamb. and P. tasa (Yendo) Ueda. During the investigation of the genus Porphyra from Tierra del Fuego and Santa Cruz, plants with the same life history as P. sanjuanensis Krish. were found; but owing to their geographic distribution and morphological characteristics they are considered as belonging to a different species. A description of P. pujalsii Coll et Oliveira Filho, mentioned for the first time for Argentina, is also included in the present work. day light standard), at 2-11 °C and at the same illuminance of 700 lux, under continuous light, 8:16 h and 12:12 h. Porphyra argentinensis sp. nov. Figs. 1--9 Plantae saxicolae, linearis, lanceolatae, frequenter http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Botanica Marina de Gruyter

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