Pellaea atropurpurea purple cliff-brake Adiantaceae PEAT; NY, rr;

  

Pellaea atropurpurea. By Arthur Haines. Copyright © 2015.New England Wild Flower Society.gobotany.newenglandwild.org

Pellaea atropurpurea. By Arthur Haines. Copyright © 2015.New England Wild Flower Society.gobotany.newenglandwild.org (Accessed 1/2015).

Pellaea atropurpurea is a fern, from a densely short-branched, wooly rhizome. 

Leaves tufted, evergreen 20-40 cm long; leaf stalk 1-23 cm long, shorter than blade, wiry, stiff, dark purplish, finely hairy; blade once or twice pinnate, pinnae 5-11 pairs, short-stalked, with 3-11 leaflets 1-7.5 cm long, 0.5-1 cm wide, axis and leaflet stalks dark, wiry, fertile leaflets narrower than sterile, linear, margins rolled under, eventually opening out. 

Spore cases continuous along margins of leaflet undersides. 

Wetland status: UPL. 

Frequency in NYC: Very infrequent. 

Origin: Native to NYC. 

Habitat: Scattered individuals on the cliff-like stone part of the Metro North RR trestle. Normally on limestone cliffs or walls.