Results 61 to 70 of about 838 (164)

Palynological studies from the Baqueró Group (Lower Cretaceous), Santa Cruz Province, Argentina. X. Pollen of Gymnospermae and final Appendix [PDF]

open access: yes, 2014
Con el presente trabajo se completa el estudio palinológico de las gimnospermas halladas en la Formación Anfiteatro de Ticó, que comprende los afloramientos de la localidad homónina, y los de la Estancia Bajo Tigre. Esta formación se encuentra en la base
Archangelsky, Sergio   +1 more
core  

A quantitative comparison of dispersed spore/pollen and plant megafossil assemblages from a Middle Jurassic plant bed from Yorkshire, UK [PDF]

open access: yes, 2015
Detailed quantitative data has previously been collected from plant megafossil assemblages from a Middle Jurassic (Aalenian) plant bed from Hasty Bank, North Yorkshire, UK.
Bhowmik   +46 more
core   +3 more sources

Genomic changes associated with transitions to heterospory and genome downsizing in land plants [PDF]

open access: yes, 2022
Green plants, ubiquitous and essential in the biosphere, have two reproductive life cycles: heterosporous and homosporous. Heterosporous plants are generally seen more often in daily life and tend to be the source of staple foods.
Dhakal, Rijan R.
core   +1 more source

Adiciones al catálogo pteridológico gallego [PDF]

open access: yes
Se comenta la localización y ecología de las poblaciones de diversas especies de helechos del género Isoetes que constituyen novedades para el catálogo florístico gallego así como nuevas localidades de otros pteridófitos de distribución fragmentada o ...
Rodríguez Guitián, Manuel A.   +2 more
core   +1 more source

Estudio paleoambiental de nuevos yacimientos de plantas y vertebrados de la “Unidad Intermedia” del Mioceno Medio de la cuenca de Madrid. [PDF]

open access: yes, 2004
Se dan a conocer los vegetales fósiles (macrorrestos foliares, frutos y palinomorfos) y una asociación de microvertebrados encontrados en yacimientos descubiertos en la “Unidad Intermedia” del Mioceno de Madrid.
Fernández Marrón , María Teresa   +3 more
core   +1 more source

Direct Repeats Co-occur with Few Short Dispersed Repeats in Plastid Genome of A Spikemoss, Selaginella vardei (Selaginellaceae, Lycophyta) [PDF]

open access: yes, 2018
AbstractBackgroundIt is hypothesized that the highly conserved inverted repeat (IR) structure of land plant plastid genomes (plastomes) is beneficial for stabilizing plastome organizations, whereas the mechanism of the occurrence and stability maintenance of the newly reported direct repeats (DR) structure was yet awaiting further exploration.
Zhang, Hong-Rui   +2 more
openaire   +1 more source

Taxonomic Revision of Fern-Allies Lycopodiaceae Mirbel in Malaysia [PDF]

open access: yes, 2004
The family Lycopodiaceae in Malaysia consists of three genera, namely, Huperzia, Lycopodium and Lycopodiella and comprises 32 species, including 11 varieties. Four species are reported as new records for Malaysia (Huperzia beccarii, H.
Kongoi, Clasius @ Claysius
core  

Morfologìa comparativa de los estròbilos de seis especies sudamericanas del gènero Selaginella (Lycophyta)

open access: yes, 2022
Fil: Labiano, Marina Cecilia. Universidad Nacional de Salta. Facultad de Cs.naturales.
López, Priscila D., Labiano, Marina C.
openaire   +1 more source

О ГОМОЛОГИЯХ ПОЧЕК POLYPODIOPHYTA и ANGIOSPERMAE [PDF]

open access: yes, 2008
Исследованы почки у 25 видов папоротников, произрастающих в разных регионах РФ. Выделены два типа: осевые и листовые, и несколько их вариантов, продемонстрирована их связь с жизненными формами папоротников.
Шорина, Н.И.
core  

Structure of mixed ombrophyllous forests with Araucaria angustifolia (Araucariaceae) under external stress in Southern Brazil. [PDF]

open access: yes, 2015
This study is part of the Floristic and Forest Inventory of Santa Catarina, conceived to evaluate forest resources, species composition and structure of forest remnants, providing information to update forest conservation and land use policy in Southern ...
BROGNI, E.   +10 more
core  

Home - About - Disclaimer - Privacy