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Cystopteris × wagneri: Wagner's Bladderfern

Cystopteris × wagneri, commonly known as Wagner's bladderfern, is a naturally occurring hybrid fern.

Taxonomy and Nomenclature

• Scientific Name: Cystopteris × wagneri R.C. Moran
• Family: Cystopteridaceae (sometimes also referred to as Woodsiaceae or Dryopteridaceae in older classifications)
• Kingdom: Plantae
• Taxonomic Serial Number (TSN): 501963
• Hybrid Origin: A hybrid between Cystopteris tennesseensis and Cystopteris tenuis.
• Note: Older classifications may have recognized C. tenuis as Cystopteris fragilis var. mackayi.

Distribution and Habitat

While the text doesn't explicitly detail the distribution, it mentions Wagner's Bladderfern being found in the United States. One parent species, Cystopteris tennesseensis, is known as the Tennessee bladderfern, suggesting a possible overlap in geographic range.

Additional Information

• Cystopteris × wagneri was first described by Robbin C. Moran in 1983.
• The text mentions the genus Cystopteris belongs to the subfam. Cystopteridoideae within the family Aspleniaceae.

Genetic Information

• The text references studies involving chromosome numbers in the related species Cystopteris fragilis, indicating that cytological data is relevant in Cystopteris research.
• The text mentions Cystopteris tennesseensis is an allotetraploid.

Resources

• The text references several databases and institutions that may hold further information, including:
  • The Plant List
  • IPNI (International Plant Names Index)
  • Australian Plant Name Index
  • NYBG (New York Botanical Garden) Virtual Herbarium
  • Integrated Taxonomic Information System (ITIS)
  • PhytoImages.siu.edu

Quirky Facts

• The text mentions a study of Cystopteris fragilis collected in Mongolian Altai, highlighting the wide geographic distribution of some species within the genus.