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Cryptogramma stelleri
Conservation status
Secure  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Polypodiophyta
Class:	Polypodiopsida
Order:	Polypodiales
Family:	Pteridaceae
Genus:	Cryptogramma
Species:	C. stelleri
Binomial name
Cryptogramma stelleri (S.G.Gmel.) Prantl

Cryptogramma stelleri, common names slender cliff-brake, fragile rock-brake, slender rock-brake, and Steller's rockbrake, is a plant found in North America. It is listed as endangered in Connecticut, Massachusetts, New Jersey, and Pennsylvania. It is listed as threatened in Maine and New Hampshire, as exploitably vulnerable in New York (state) and as sensitive in Washington (state).

Cryptogramma stelleri is known to be able to use artificial light to grow in places which are otherwise devoid of natural light, such as Crystal Cave in Wisconsin.

References

1. ^ NRCS. "Cryptogramma stelleri". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 15 April 2021.
2. "Connecticut's Endangered, Threatened and Special Concern Species 2015". State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved 17 January 2018. (Note: This list is newer than the one used by plants.usda.gov and is more up-to-date.)
3. Thatcher, Edward P. (1949). "Bryophytes of an Artificially Illuminated Cave". The Bryologist. 52 (4): 212–214. doi:10.2307/3239480.

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