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Cystopteris

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Cystopteris

 

(bladder fern), a genus of ferns of the family Polypodiaceae. The small plants have two to four pinnate leaves on small, fragile stalks. There are about 15 species distributed in temperate and subtropical belts. Five species occur in the USSR, mainly on cliffs and mountain slopes. The most well-known species is the almost cosmopolitan fragile fern (Cystopteris fragilis), whose young leaves and spores contain hydrocyanic acid. The ferns are not eaten by livestock.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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References in periodicals archive
Cystopteridaceae es un linaje de distribucion esencialmente boreal, constituido por los generos Acystopteris, que incluye tres especies asiaticas, Gymnocarpium, con siete especies de distribucion boreal (Pryer & Britton, 1983) y Cystopteris, con aproximadamente 28 especies (Rothfels et al., 2012b, 2013), distribuido principalmente en las zonas montanosas templadas de ambos hemisferios, siendo el unico presente en America del Sur.
Reeves X 18 Cheilanthes pyramidalis Fee X X 19 Cystopteris fragilis (L.) X X X Bernh.
Cystopteris protrusa (Weatherby) Blasdell; E4182; Evers 90765
x x H Pellaea ternifolia (Cav.) Link x 0 H Woodsiaceae Cystopteris fragilis (L.) Bernh.
Cheilanthes, Cystopteris, Equisetum, Isoetes, Woodsia).
x Cystopteris protrusa (Weath.) x x Blasdell Decodon verticillatus (L.) x x Elliott Desmodium canadense (L.) DC.
Companeras: Buddleja globosa y Cystopteris fragilis 2, Adiantum excisum, Colliguaja odorifera y Schinus latifolius var.
Tonduz 10888 Cyperus mutisii 1906-11-11 Oton Jimenez 69 Cyperus hermaphroditus 1906-11-11 Oton Jimenez 68 Cystopteris fragilis 1888-07-31 Paul Biolley 414 Dahlia rosea 1888-01-15 H.
Los roquedales humedos son poco comunes en los bosques de Polylepis habiendose encontrado vegetacion propia de estos ambientes y directamente asociado a Polyleps incarum en Lampa, como es el caso de algunas especies de los generos Ribes, Cystopteris, Stellaria, Polystichum, entre otros.
Nevertheless, the study of apogamy in a evolutionary context is important, because in many cases (for example, complexes of Asplenium, Dryopteris, Polystichum and Cystopteris Bernh.) it is related to processes of hybridization and polyploidy (Bicknell & Koltunow 2004).
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