Argyrochosma

Argyrochosma is a genus of ferns known commonly as false cloak ferns. The genus is included in the Cheilanthoideae subfamily of the Pteridaceae.[1] Species now in this genus were previously treated as members of related genera Notholaena or Pellaea but were segregated into their own genus in 1987. These ferns, of which there are about 20 species, are mostly native to the Americas, from North to South and including the Caribbean, while one species, A. connectens, is known from Sichuan, China.[2] They are commonly found growing in cracks between rocks. Their leaves are generally shorter than 40 centimeters and have rounded bluish or grayish green segments. Often the lower surface of the segments is coated in a white dust, and the sporangia contain brown spores.

Argyrochosma
Argyrochosma jonesii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Polypodiales
Family: Pteridaceae
Subfamily: Cheilanthoideae
Genus: Argyrochosma
(Sm.) Windham
Species

See text.

Species

As of April 2020, the Checklist of Ferns and Lycophytes of the World recognized the following species:[3]

References
  1. Christenhusz, Maarten J. M.; Zhang, Xian-Chun; Schneider, Harald (18 February 2011). "A linear sequence of extant families and genera of lycophytes and ferns" (PDF). Phytotaxa. 19: 7–54. doi:10.11646/phytotaxa.19.1.2. ISSN 1179-3163.
  2. Wang, Wan; Yang, Wenli; Mao, Xingxing; Zhao, Ranran; Dou, Ping; Zhang, Gangmin (16 July 2015). "The phylogenetic affinities of Pellaea connectens, a rare endemic Chinese fern". Phytotaxa. 220 (1): 30. doi:10.11646/phytotaxa.220.1.2.
  3. Hassler, Michael & Schmitt, Bernd (November 2019). "Argyrochosma". Checklist of Ferns and Lycophytes of the World. 8.11. Retrieved 2020-04-14.

Further reading
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