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bladderfern

Scientific Name: Cystopteris

Family: Dryopteridaceae

Category: Fern

Growth:

Duration:

Other Names:

       

Brittle Bladder Fern (Cystopteris fragilis)

The Cystopteris fragilis, commonly known as Brittle Bladder Fern or Common Fragile Fern, is a delicate and adaptable fern found worldwide.

Considerations for Pets

  • While the text indicates no known toxicity reports for this species, it's always prudent to prevent pets from ingesting any plant material.

Taxonomy and Nomenclature

  • Scientific Name: Cystopteris fragilis
  • Common Names: Brittle Bladder Fern, Common Fragile Fern, Brittle Fern, Bladder Fern, Northern Fragile Fern
  • Family: Cystopteridaceae (although Dryopteridaceae and Athyriaceae (Ladyfern Family) are also mentioned in relation to other Cystopteris species)
  • Genus: Cystopteris
  • Synonyms:
    • Polypodium fragile
  • Related Species:
    • Cystopteris bulbifera (Bulblet Bladderfern)
    • Cystopteris dickieana (Dickie's Bladder Fern) - also listed as C. fragilis var. dickieana and C. fragilis subsp. dickieana
    • Cystopteris protrusa (Lowland Bladderfern)
    • Cystopteris laurentiana (Laurentian Bladder Fern)
    • Cystopteris regia (Royal Bladder Fern)
    • Cystopteris montana (Mountain Bladder Fern)
    • Cystopteris dentata
    • Cystopteris diaphana (Diaphanous Bladder Fern)

Distribution and Habitat

  • Found in temperate areas worldwide.
  • Generally grows in shady and rocky areas, often on limestone rocks and walls.
  • Specific locations mentioned include:
    • Ireland
    • Northeastern Oregon and Southeastern Washington (Blue Mountains, Malheur or Umatilla National Forests)
    • Lake Lyndon area
    • Orange County, California
    • Iceland
    • Washington Co., Maryland
    • Caswell Co., NC

Morphological Characteristics and Growth Habits

  • Small fern with graceful lanceolate leaves.
  • Perennial fern that often grows from cracks in rocks.
  • Long-stalked with glabrous leaves.
  • Second lowest leaf segment is often the longest.
  • Distance between leaf segments is a key identifying feature.
  • Mountain Bladder Fern has delicate fronds arising singly from dark, cord-like, creeping rhizomes. The black, sparsely scaly petioles, 6-30 cm long, are longer.

Quirky Facts

  • The name "Cystopteris" comes from the bladder-shaped spore cases.

Further Information

  • Dave's Garden: A community sharing tips and ideas for gardens, seeds, and plants.
  • Plant Delights Nursery: An award-winning mail order perennial plant provider.
  • Discover Life: Provides information about the biology, natural history, ecology, identification, and distribution of Cystopteris.
  • California Academy of Sciences.