Results 21 to 30 of about 193 (130)
Isoetes pedersenii, a new species from Southern South America
Anais da Academia Brasileira de Ciências, 2010 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.
Cecilia Macluf +2 more
doaj +1 more source
Structure of wall layers inSelaginella kraussianamicrospores (Lycophyta)
Grana, 2010 A similarity was found in both construction and ultrastructure between the two exospore layers in microspores of Selaginella kraussiana. The exospore is made up of two different kinds of rods. One of the kinds of rods are large, 100-150 nm in width, while the other are tubular rods 10-15 nm in diameter.
Morbelli, Marta Alicia, Rowley, John R.
openaire +2 more sources
Evaluación preliminar del grado de amenaza de los Helechos y Licofitas de Argentina
Boletín de la Sociedad Argentina de Botánica, 2011 El objetivo de esta contribución es realizar una evaluación preliminar del grado de amenaza de los helechos y Lycophyta que crecen en Argentina, con el fin de proponer estrategias para su conservación. Para ello se tuvieron en cuenta los taxa endémicos
Gabriela E. Giudice +6 more
doaj +1 more source
Rivista Italiana di Paleontologia e Stratigrafia, 2002 The knowledge of Triassic macroflora from the Dolomites mostly concerns the Ladinian, while literature data on Anisian plants are scarce. This gap is filled by the discovery, reported here, of a rich plant deposit from Kühwiesenkopf / Monte Prà della ...
CARMEN BROGLIO LORIGA +5 more
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Caldasia, 2021 La flora del Santuario de Fauna y Flora de Iguaque, única área protegida de la provincia de Ricaurte, Boyacá, Colombia, representa la extraordinaria diversidad vegetal de la Cordillera Oriental colombiana.
Favio González, Natalia Pabón-Mora
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Hoehnea, 2020 RESUMO O objetivo do presente estudo foi inventariar as samambaias e licófitas de um fragmento de floresta paludosa, no Município de Dois Córregos, São Paulo, Brasil, além de fornecer dados sobre as guildas de formas de vida, distribuição geográfica ...
Frederico Fregolente Faracco Mazziero +2 more
doaj +1 more source
Biodiversidad de Pteridophyta en México
Revista Mexicana de Biodiversidad, 2013 Se presenta un resumen sobre la diversidad de las Pteridophyta s. lat. (Monilophyta y Lycophyta) y su importancia en la flora mexicana. El análisis está basado en publicaciones recientes, principalmente The Pteridophytes of México, el volumen I de la ...
Esteban Martínez Salas +1 more
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Palynostratigraphy and paleoecology of Middle Jurassic strata, southeastern Maragheh, according to terrestrial palynomorphs [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2017 The Dalichai Formation at the Guydagh stratigraphic section in the southeast of Maragheh, (Western Alborz), with measured thicknesses of 198 meters (consisting of limestone, Calcareous shale, shale limestone, shale and marl) contain terrestrial (spores ...
FRESHTEH SAJJADI +1 more
doaj +1 more source
New Phytologist, Volume 206, Issue 1, Page 352-367, April 2015., 2015 Summary Liverworts are the most basal group of extant land plants. Nonetheless, the molecular biology of liverworts is poorly understood. Gene expression has been studied in only one species, Marchantia polymorpha. In particular, no microRNA (miRNA) sequences from liverworts have been reported.
Sylwia Alaba +11 more
wiley +1 more source
Two Novel Spirostene Glycosides from and their Chemotaxonomic Significance
Natural Product Communications, 2015 During an investigation of the Indian heterosporous fern Selaginella chrysocaulos , two novel C 28 spirostene monosides, chrysocauloside A and B were identified.
Olaf Kunert +5 more
doaj +1 more source