Results 61 to 70 of about 11,500 (268)
Checklist of European Pteridophytes. [PDF]
Sommerfeltia, 1987 Abstract This is the first comprehensive checklist of European pteridophytes produced from the computerised relational database originally set up by the European Taxonomic, Floristic and Biosystematic Documentation System. The place of publication, full synonymy and distribution of 329 accepted taxa are given.
L. N. Derrick, A. C. Jermy, A. M. Paul
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Nordic Journal of Botany, Volume 2026, Issue 1, January 2026.We carefully observed the submicroscopic structural characteristics of the hairs of the stipe, rachis, costae, fronds and indusia of 15 species of Hypodematium from China and photographed them under an anatomical microscope and scanning electron microscope (SEM).
Xiaojuan Li, Chao Zhang, Jianxiu Li
wiley +1 more source
Identifikasi Keanekaragaman Paku-pakuan (Pteridophyta) Epifit Pada Hutan Bekas Tebangan Di Hutan Penelitian Malinau – Cifor Seturan (Diversity Identification on the Pteridophytes Epiphyte at the Log Over Area at Malinau Forest Research – Cifor Seturan) [PDF]
, 2007 The aim from this research is to found out the various kinds of Pteridophytes epiphytes and its porophyte in the log over area to the broadness of 12 hectares in the Malinau Research Forest (MRF-CIFOR) Seturan – district of Long Loreh the regency of ...
Sujalu, A. P. (Akas)
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Plant Direct, Volume 10, Issue 1, January 2026.ABSTRACT In vascular plants, genes in the plastid genome are transcribed by two types of RNA polymerases, namely, phage‐type nuclear‐encoded and bacterial‐type plastid‐encoded plastid RNA polymerases (NEP and PEP, respectively). Eudicots, including Arabidopsis, carry two isoforms of NEP, RPOTp and RPOTmp.
Yushi Kurotaki +4 more
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Pteridophyte Aerospora of India [PDF]
Grana, 1988 Abstract Spores belonging to 43 taxa of pteridophytes were observed from the ambient air of 11 localities in India. It is suggested that pteridophyte spores could be listed among viable particulate air pollutants, especially in the light of the earlier reports regarding their allergenicity.
null Yasmeen, Jaswant Singh, Santha Devi
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Refugia or at risk? Alpine snowbank communities in the face of climate change
Conservation Science and Practice, Volume 8, Issue 1, January 2026.We used a literature review of the alpine snowbank communities of the Presidential Range of New Hampshire, USA as an model system for applying the climate change refugia conservation cycle framework to similar imperiled systems globally. We highlight threats posed to these systems, their ability to serve as future refugia, potential management ...
Kyler B. B. Phillips +5 more
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The life cycles of cryptogams [PDF]
, 1991 Meiosis and karyogamy are recognized as control points in the life cycle of cryptogams. The control of meiosis is evidently complex and in yeast, and by analogy in all cryptogams, involves progressive gene activation.
Bell, Peter R.
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First palynologic record of the Cretaceous La Yesera Formation (Salta Group), northwestern Argentina [PDF]
, 2014 Thirty-four taxa were documented from six palynologically productive samples of the La Yesera Formation (Brealito and Don Bartolo Members) in the Pucará locality (Salta Province, northwestern Argentina).
Narvaez, Paula Liliana +2 more
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Keys to species and varieties of ferns and fern allies of northeastern North America [PDF]
, 1940 The following key is aimed at enabling students to determine the species and varieties of pteridophytes given by Broun for northeastern North America..
Friesner, Ray C.
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AgronomyThe effects of lead (Pb) stress on plant growth and physiological processes may depend on other environmental stresses coinciding. Knowledge of the response of shade-loving plants to stresses, particularly the relationship between Pb stress and light ...
Anna Pietrak +3 more
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