Results 261 to 270 of about 73,975 (306)

Evolution of Spore Morphology in the Blechnaceae

International Journal of Plant Sciences, 2018
Premise of research. In the recent past, nine to 12 genera of Blechnaceae have been generally recognized.
Robbin C. Moran, Judith G. Hanks, Paulo H. Labiak   +2 more
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Spore Morphology of Botrychium lunarioides

American Fern Journal, 1998
Spore morphology was examined in the rare fern Botrychium lunarioides with the scanning electron microscope. Surface topography of the spore walls confirms the placement of B. lunarioides in the subgenus Sceptridium. Botrychium is a widespread genus of eusporangiate ferns classified within the family Ophioglossaceae.
James E. Watkins, Roland R. Dute
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Automated Spore Counting using Morphology and Shape

Proceedings of the 2019 11th International Conference on Bioinformatics and Biomedical Technology, 2019
Pyricularia Oryzae is a type of fungal spores which can lead to the most damaging rice blast disease. We have developed a quick and robust tool for counting the number of spores for measuring spore concentration using image processing techniques.
Punnarai Siricharoen, Usa Humphries
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The Morphology of Bowmanites dawsoni Spores

Micropaleontology, 1970
Paleozoic sphenophyllalean cone, light microscopy and transmission and scanning electron microscopic methods ...
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Spore Morphology of Anemia Subgenus Coptophyllum

American Fern Journal, 1977
Anemia Swartz is a genus of leptosporangiate ferns consisting of approximately 90 species. The genus inhabits tropical and semitropical latitudes in Africa, India, and the Americas, with two species reaching the United States. Anemia generally is divided into three subgenera: Coptophyllum, Anemiorrhiza, and Anemia.
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Pollen spore morphology and plant evolution

Journal of Palaeosciences, 1996
Spores and pollen grains both are resistant to environmental stress and diagnostic by virtue of the unique exine characteristics, by which it has emerged as a reliable tool in evolutionary biology, both of fossils and present day plants, at various taxa levels.
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Spore Morphology in Thelypteridaceae I: Pseudocyclosorus

Kew Bulletin, 1980
This is the first of a proposed series of papers on the spore morphology of ferns in the family Thelypteridaceae, mainly as seen using the scanning electron microscope (S.E.M.), but where useful also with the light microscope. Various authors have studied the taxonomy of this family and attempted to classify its species (Christensen, 1913, 1920; Ching,
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Morphology of the Spores and Prothallus of Christiopteris tricuspis

American Fern Journal, 1967
Christiopteris Copel. is a small genus of epiphytic, polypodiaceous ferns that has morphologically better-known sporophytes than many other genera of leptosporangiate ferns. Three species are recognized, one of Sikkim, Annam, and Malaya, another of the Philippines, and the third of New Caledonia. Bower (1928, pp.
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Pollen and Spore Morphology

American Fern Journal, 1960
Clair A. Brown, G. Erdtman
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