Family: Aspleniaceae
maidenhair spleenwort
Christopher Noll
Christopher Noll
University of Wisconsin - Madison (WIS-VP)
Etymology: Asplenium: from Greek a, "without," and spleen, "spleen"
Plants: perennial fern
Conservation Status: Special Concern
Plants: perennial fern
Conservation Status: Special Concern
Rare on moist boulders and outcrops, usually near water. Subspecies trichomanes grows on acidic rocks such as sandstone, and granite. It is a diploid with smaller spores, 27--32 um. Subspecies quadrivalens D.E.Meyer grows on calcareous rocks, usually limestone and dolomite. It is a tetraploid with larger spores, 37--43 um.
Flora of North America: Flora of North America Floristic Rating: Coefficient of Conservatism = 10 WIS DNR-Bureau of Endangered Resources: Detailed information on Wisconsin listed species including state and federal status, photos, etc. Minnesota Dept. of Natural Resources: Rare Species Guide; description, conservation, photos, maps, etc. USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Fern & Fern Allies: Photos, descriptions, information
Christopher Noll
Christopher Noll
Christopher Noll
Kurt Stüber
Botanical Illustration
Botanical Illustration
Botanical Illustration
Botanical Illustration
Emmet J. Judziewicz
Robert H. Read
Christopher Noll