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	Provedor de dados Anais da ABC (AABC) (2) Autor Macluf,Cecilia (2) Giudice,Gabriela (1) Meza Torres,Esteban I. (1) Morbelli,Marta (1) Solís,Stella M. (1) Palavra-chave Isoetes (2) Lycophyta (2) Argentina (1) Brazil (1) Corrientes (1) New species (1) Palynology (1) Sculpture (1) Spores (1) Ultrastructure (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2010 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Isoetes pedersenii, a new species from Southern South America Anais da ABC (AABC) Macluf,Cecilia; Meza Torres,Esteban I.; Solís,Stella M.. The name Isoetes pedersenii H.P. Fuchs (Lycophyta), a species known only from the Mburucuyá National Park, Corrientes, Argentina, is validated. Observations were carried out on herbarium material with stereoscopic, light and scanning electron microscopes. The species is described and typified. A diagnosis and discussion about its distribution and its relationship with the morphology of other species of Isoetes are provided. Tipo: Info:eu-repo/semantics/article Palavras-chave: Argentina; Corrientes; Isoetes; Lycophyta; New species. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200011 Morphology and ultrastructure of megaspores and microspores of Isoetes sehnemii Fuchs (Lycophyta) Anais da ABC (AABC) Macluf,Cecilia; Morbelli,Marta; Giudice,Gabriela. The morphology and wall ultrastructure of megaspores and microspores of Isoetes sehnemii that grows in Brazil were analyzed as part of the study of the Isoetaceae present in Southern South America. The observations were performed with light, scanning and transmission electron microscopes. The megaspores are trilete, 350-450μm in equatorial diameter. The surface is reticulate. In section, the sporoderm is 100μm thick including the ornamentation. The wall is composed of a siliceous perispore, which consists of short fused flatten, elements forming a three-dimensional mesh. The exospore has two zones of different structure. The endospore is fibrillar. The microspores are monolete, 21-27μm in equatorial diameter. The sporoderm is composed of a sporopollinic... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lycophyta; Isoetes; Brazil; Spores; Ultrastructure; Sculpture; Palynology. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000200010 Registros recuperados: 2 Primeira ... 1 ... Última

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