Thelypteris Genus fern Aspleniaceae

Thelypteris noveboracensis.©Thomas Kent.Flora Finder.©florafinder.org

Thelypteris noveboracensis.©Thomas Kent.Flora Finder.©florafinder.org (Accessed 3/2017).

Thelypteris is a genus of medium-sized ferns from the tips of blackish, slender, slightly scaly rhizomes.

Leaves twice pinnate or once pinnate and pinnately lobed, midrib and major veins hairy, at least on upper side, leaf stalk straw-colored,

Thelypteris leaf veins.© Gary Fewless.University of Wisconsin - Green Bay.Cofrin Center for Biology.uwgb.edu

Thelypteris leaf veins.© Gary Fewless.University of Wisconsin – Green Bay.Cofrin Center for Biology.uwgb.edu (Accessed 3/2017).

Spore cases inside leaflet margins, along veins, kidney-shaped (Cobb 1963).

Thelypteris kunthii.fertile pinnule.© George Yatskievych, 2006-2011.discoverlife.org.hardyfernlibrary.com

Thelypteris kunthii.fertile pinnule.© George Yatskievych, 2006-2011.discoverlife.org.hardyfernlibrary.com (Accessed 3/2017).