Thelypteris simulata  (Parathelypteris s.) Massachusetts fern Aspleniaceae THSI; Q, a, cu (Greller 1985), j (NY Flora Assoc.1990); 

  

Thelypteris simulata.Janet Novak.www.ct-botanica.society.org (Accessed 3/2014)

Thelypteris simulata.Janet Novak.www.ct-botanica.society.org (Accessed 3/2014)

Thelypteris simulata  is a fern from a creeping rhizome. 

Leaves arising in small clusters from rhizome tips, to 50 cm long, 15 cm wide; stalk to 35 cm, base pale brown, slightly scaly, yellow-green above; blade once pinnate-pinnately lobed, leaflets tapered at both ends, lobed almost to midrib, lobes blunt-tipped. 

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

Wetland status: FACW+. 

Frequency in NYC: Very infrequent. 

Origin: Native. 

Thelypteris simulata.spore cases (sori).© 2003 Gary Fewless.University of Wisconsin - Green Bay.Cofrin Center for Biology.uwgb.edu 

Thelypteris simulata.spore cases (sori).© 2003 Gary Fewless.University of Wisconsin – Green Bay.Cofrin Center for Biology.uwgb.edu  (Accessed 3/2017).

Habitat: Acid bogs and swamp forests. Apparently shade tolerant. 

Notes: Similar to T. palustris but blade of T. palustris is described as narrower, and spore cases differ.