Results 31 to 40 of about 11,619 (265)

Pollen Morphology of Crucianella L. (Rubiaceae) Based on Light and Scanning Electron Microscope Data and Implications for Taxonomy

Microscopy Research and Technique, EarlyView.
This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk, Zelal Kücük, Gülşah Bağcıvan, Ruziye Daşkın   +3 more
wiley   +1 more source

Native Perennial Vegetation Buffer Strips Improve Structural Indicators of Riparian Protection in Mediterranean Agroecosystems

Land Degradation &Development, EarlyView.
ABSTRACT Riparian zones in Mediterranean agroecosystems are highly vulnerable to degradation because cultivation often reaches stream edges and annual vegetation senesces during the late‐summer dry period, leaving soils exposed when the first erosive autumn rains occur.
Marcelo Sternberg, Shir Greenberg, Felicia Orah Rein, Roey Egozi, Ofer Cohen   +4 more
wiley   +1 more source

Seagrass species diversity in Tanzania based on morphological and molecular data

Nordic Journal of Botany, EarlyView.
Seagrass diversity along the Tanzanian coast has been documented mainly through morphology, with limited molecular reference data available for Tanzania and the wider Western Indian Ocean. This study combined morphological identification with nuclear ribosomal internal transcribed spacer (ITS) and plastid ribulose‐1,5‐bisphosphate carboxylase/oxygenase
James Leonard Lusana, Blandina Robert Lugendo   +1 more
wiley   +1 more source

Estrutura de um curso de taxonomia de campo: o modelo aplicado em Ubatuba, São Paulo Structure of taxonomy field course: the model applied at Ubatuba-São Paulo

Acta Botânica Brasílica, 1997
As atividades de campo são essenciais à formação de um bom taxonomista. Os problemas mais usuais das atividades didáticas no campo são: a) grande número de alunos; b) formação heterogênea e desequilíbrio de conhecimento dos participantes; c) repetições e
Hermógenes de F Leitão Filho, Ricardo R Rodrigues, Jorge Y Tamashiro, Dionete A Santin, Natália M Ivanauskas, Alexandre Salino   +5 more
doaj   +1 more source

Begonia quadricornualata sp. nov. (Begoniaceae) from India

Nordic Journal of Botany, EarlyView.
A new species of Begonia L. (Begoniaceae) belonging to sect. Platycentrum is described from the Papum Pare District of Arunachal Pradesh, India. This new species is distinguished by its dense, long, red to brown hispid hairs on the adaxial leaf surface of female plants, caducous stipules and bracts, and solitary‐flowered female inflorescence ...
Rohan Maity, Umeshkumar L. Tiwari, Sudhansu Sekhar Dash   +2 more
wiley   +1 more source

Flora das cangas da Serra dos Carajás, Pará, Brasil: Cordiaceae

Rodriguésia
Resumo É apresentado o levantamento das espécies de Cordiaceae que ocorrem sobre as cangas da Serra dos Carajás, no estado do Pará. Dois gêneros e três espécies foram registrados: Cordia nodosa, C. exaltata e Varronia multispicata.
Maurício Takashi Coutinho Watanabe, Alice Lima Hiura, Matheus Guimarães Cardoso Nogueira   +2 more
doaj   +1 more source

Jungermanniales (Marchantiophyta) da Chapada da Ibiapaba, Ceará, Brasil Jungermanniales (Marchantiophyta) of the Ibiapaba Plateau, Ceará state, Brazil

Acta Botânica Brasílica, 2009
A Chapada da Ibiapaba, localiza-se ao norte do estado do Ceará, possuindo uma extensão de 110 km com alitudes variando entre 800 e 1100 m. No inventário florístico de briófitas realizado na área, foram encontradas 15 espécies de hepáticas folhosas ...
Hermeson Cassiano de Oliveira, Cid José Passos Bastos   +1 more
doaj   +1 more source

Taxonomic revision of the genus Tzveleviochloa (Poaceae, Aveninae) in India

Nordic Journal of Botany, EarlyView.
The taxonomy of Tzveleviochloa in India is revised based on morphological evidence, comprehensive observations of herbarium specimens and field records, and several botanical explorations in the study area. The accepted diversity is increased from two to five species, including two recently described species. The genus is distributed in the Western and
Dileshwar Prasad, Shubham Jaiswal, Sangam Sharma, Smita Tiwari, Rekha Yadav, Priyanka Agnihotri   +5 more
wiley   +1 more source

Eupatorieae (Asteraceae) no Parque Estadual da Serra Dourada, Goiás, Brasil

Rodriguésia
ResumoO Parque Estadual da Serra Dourada - PESD é o segundo maior Parque do estado de Goiás, abrangendo 30.000 hectares. Com o objetivo de contribuir com um melhor conhecimento sobre a diversidade de Asteraceae no estado de Goiás realizou-se o tratamento
Rogério Neves Ribeiro, Aristônio Magalhães Teles   +1 more
doaj   +1 more source

Pteris madhusoodananii (Pteridaceae), a new fern species from India

Nordic Journal of Botany, EarlyView.
Pteris madhusoodananii sp. nov. (Pteridaceae), from the Kolli hills of Eastern Ghats, India, is described. The new taxon is morphologically distinct, characterized by a unique lamina texture and coloration, specific pinna‐pinnule architecture and distinct spore micromorphology.
Kalathil Sethumadhavan Abhilash, Alex Philip Alen, Thekkekara Suresh Gayathri, Veerankutty Suresh, Jose Sojan, V. K. Sreenivas, Lakshmanan Leeja   +6 more
wiley   +1 more source