Rahul Sharma (Editor)

Cystopteris

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Kingdom
  
Higher classification
  
Dryopteridaceae

Order
  
Division
  
Pteridophyta

Scientific name
  
Cystopteris

Rank
  
Genus

Cystopteris Cystopteris fragilis fragile fern Go Botany

Lower classifications
  
Cystopteris fragilis, Cystopteris bulbifera, Cystopteris dickieana, Cystopteris protrusa, Cystopteris tenuis

Cystopteris is a genus of ferns in the family Cystopteridaceae. These are known generally as bladderferns or fragile ferns. They are found in temperate areas worldwide. This is a very diverse genus and within a species individuals can look quite different, especially in harsh environments where they experience stress and remain small and stunted. Also, they hybridize easily with each other. Identifying an individual can be challenging. In general these are rhizomatous perennials which may grow in rocky areas or in soil. Their leaves are multiply pinnate, in that each leaflet is divided into smaller parts. The sori are usually rounded and are covered in an inflated bladder-like indusium.

Contents

Cystopteris Southwest Colorado Wildflowers Cystopteris fragilis and reevesiana

Cystopteris garden plants


Species

Species include:

Cystopteris Lowland Bladder Fern Cystopteris protrusa

  • Cystopteris alpina
  • Cystopteris bulbifera - bulblet fern
  • Cystopteris diaphana
  • Cystopteris dickieana - Dickie's bladderfern
  • Cystopteris douglasii - Douglas' bladderfern
  • Cystopteris fragilis - brittle bladderfern
  • Cystopteris laurentiana - St. Lawrence bladderfern
  • Cystopteris montana - mountain bladderfern
  • Cystopteris protrusa - lowland bladderfern
  • Cystopteris reevesiana - Reeves' bladderfern
  • Cystopteris tennesseensis - Tennessee bladderfern
  • Cystopteris tenuis - upland brittle fern
  • Cystopteris utahensis - Utah bladderfern
  • Hybrids

    Cystopteris widely hybridizes internally.

    North American Cystopteris Hybrids

    The diploid parent species within the genus include:

  • C. bulbifera
  • C. "hemifragilis" (an undiscovered or extinct diploid)
  • C. protrusa
  • C. reevesiana
  • The hybrid species include:


  • C. fragilis (C. "hemifragilis" X C. reevesiana; allotetraploid)
  • C. laurentiana (C. bulbifera X C. fragilis; allohexaploid)
  • C. tennesseensis (C. bulbifera X C. protrusa; allotetraploid)
  • C. tenuis (C. "hemifragilis" X C. protrusa; allotetraploid)
  • C. utahensis (C. reevesiana X C. bulbifera; allotetraploid)
  • Non-species hybrids include:

    Cystopteris Cystopteris fragilis fragile fern Go Botany

  • Cystopteris Xillinoensis (C. bulbifera X C. tenuis; allotriploid)
  • Cystopteris Xwagneri (C. tennesseensis X C. tenuis; allo-allotetraploid)
  • Cystopteris fragilis X Cystopteris tenuis (allo-allotetraploid)
  • Cystopteris protrusa X Cystopteris tennesseensis (allotriploid)

  • Cystopteris httpsuploadwikimediaorgwikipediacommonsthu

    Cystopteris Cystopteris fragilis

    References

    Cystopteris Wikipedia