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Indian Journal of Forestry, 2022
Bhutanese pteridophytes have been compiled into a check-list of 568 taxa (543 species and 25 additional subspecies), based on reidentification of nearly all the world’s herbarium holdings from the Country, studied by the first author. We have also carried out many field-excursions, particularly in west and east Bhutan, collecting and identifying ...
Christopher Fraser-Jenkins +1 more
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Bhutanese pteridophytes have been compiled into a check-list of 568 taxa (543 species and 25 additional subspecies), based on reidentification of nearly all the world’s herbarium holdings from the Country, studied by the first author. We have also carried out many field-excursions, particularly in west and east Bhutan, collecting and identifying ...
Christopher Fraser-Jenkins +1 more
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1980
Chromosome studies of pteridophytes had their major impetus in the work of Irene Manton (1) who was the first to show the far-reaching significance of Polyploidy in these plants. Her work was followed not only by numerous investigations by her own students at the University of Leeds but by researchers in many parts of the world, including especially ...
W H, Wagner, F S, Wagner
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Chromosome studies of pteridophytes had their major impetus in the work of Irene Manton (1) who was the first to show the far-reaching significance of Polyploidy in these plants. Her work was followed not only by numerous investigations by her own students at the University of Leeds but by researchers in many parts of the world, including especially ...
W H, Wagner, F S, Wagner
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2010
Spore viability is defined as the time that spores retain their capacity to germinate. It is a factor of primary importance in the establishment of fern species and populations in a new habitat after spore dispersal. Viability is typically maintained for a long period in pteridophytes, but there are great variations in both interspecific and ...
Jose María Gabriel y Galán +1 more
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Spore viability is defined as the time that spores retain their capacity to germinate. It is a factor of primary importance in the establishment of fern species and populations in a new habitat after spore dispersal. Viability is typically maintained for a long period in pteridophytes, but there are great variations in both interspecific and ...
Jose María Gabriel y Galán +1 more
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Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences, 1985
SynopsisThe conservational vulnerability of tropical pteridophytes, which make up 80% of the known species, is outlined. Especially threatened are the areas of the world with high percentages of endemism.
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SynopsisThe conservational vulnerability of tropical pteridophytes, which make up 80% of the known species, is outlined. Especially threatened are the areas of the world with high percentages of endemism.
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1990
Terms applying to pteridophytes that may not be generally known, or applied in the following in a special way, or in a few cases newly coined.
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Terms applying to pteridophytes that may not be generally known, or applied in the following in a special way, or in a few cases newly coined.
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Notes on California Pteridophytes
American Fern Journal, 1937This paper includes discussion of the distribution of several California pteridophytes. Several new stations and one species new to California are reported. The writer is indebted to Dr. H. A. Gleason for looking up material at New York Botanical Garden, to Dr. Wm. R. Maxon and Dr. Norma E. Pfeiffer for making determinations, and to the curators of the
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1990
Pteridophytes have evolved to fill almost every ecological niche but the greatest species diversity is clearly found in the tropical rainforest. The rapid disappearance of this biome throughout the world with many of their pteridophyte species yet undiscovered, let alone described, is of great concern.
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Pteridophytes have evolved to fill almost every ecological niche but the greatest species diversity is clearly found in the tropical rainforest. The rapid disappearance of this biome throughout the world with many of their pteridophyte species yet undiscovered, let alone described, is of great concern.
openaire +1 more source