Cheilanthes lanosa (Michx.) D.C. Eat.
Basis for Former Listing
At this time, the existence of Cheilanthes lanosa in Minnesota is a matter of conjecture. The only documentation that bears on this question is a 19th Century herbarium specimen labeled "Dalles of the St. Croix". That description could place the location in Minnesota or Wisconsin. A fern specimen collected in Winona County, Minnesota in 1991 was initially thought to be this species, but was later revealed to be the closely related species C. feei.
Basis for Delisting
It is possible that authentic C. lanosa does occur in the state but the evidence at this time is too tenuous to justify it remaining on the state endangered species list. Cheilanthes lanosa was delisted in 2013.
References and Additional Information
Cobb, B. 1984. A field guide to ferns and their related families, northeastern and central North America. Revised edition. Houghton Mifflin Company, Boston, Massachusetts. 281 pp.
Great Plains Flora Association. 1986. Flora of the Great Plains. University Press of Kansas, Lawrence, Kansas. 1,402 pp.
Lellinger, D. B. 1985. A field manual of the ferns and fern-allies of the United States & Canada. Smithsonian Institution Press, Washington, D.C. 389 pp.
Minnesota Department of Natural Resources. 2012. Statement of need and reasonableness. Minnesota Department of Natural Resources. Division of Ecological and Water Resources. St. Paul, Minnesota. 337 pp.