388 THE PLANT LIFE OF MARYLAND 



Dryopteris spinulosa var. intermedia (Muhl.) Underw. 



Throughout the state; in swamps, open wet grounds and bogs. 

 Anne Arundel County, Leon (1553); Garrett County, Oakland (546). 



Dryopteris bootii (Tuokerm.) Underw. 



Anne Arundel County, Glenburnie (C. E. Waters). 



Phegopteris phegopteris (L.) Underw. Long Beech Fern. 



Throughout the state; in moist forests; frequent. 

 Caroline County, Watts Creek (1660). 



Phegopteris hexagonoptera (Michx.) F6e. Broad Beech Fern. 



Midland and Mountain Zones; in moist and dry forests; infrequent. 

 Washington County, Hancock (830). 



Phegopteris dryopteris (L.) F6e. Oak Fern. 



Baltimore County, Towson (Robert K. Miller). 



Woodwardia virginica (L.) J. E. Smith. Virginia Chain-fern. 



Coastal Zone; in sandy swamps and thickets, and in bogs; infrequent. 



Woodwardia areolata (L.) Moore. 



Coastal Zone; in sandy swamps and thickets, and in bogs; frequent. 



Camptosorus rhizophyllus (L.) Link. Walking Fern. 



Midland Zone; on shaded rocks, more abundant on calcareous rocks but 



not confined to them; infrequent. 

 Baltimore County, Warren (453). 



Asplenium pinnatifidum Nutt. Pinnatifid Spleenwort. 



Washington County, Weverton, on shaded sandstone rocks (1768). 



Asplenium platyneuron (L.) Oakes. Ebony Spleenwort. 



Throughout the state; in dry forests; in open situations and on rocks; 

 common. 



Asplenium trichomanes L. Maiden-hair Spleenwort. 



Midland and Mountain Zones; on shaded or exposed rocks; infrequent. 

 Allegany County, Flintstone (1018). 



Asplenium angustifolium Michx. Narrow-leaved Spleenwort. 



Baltimore County, moist forests along Gunpowder river near Warren 

 (Robert K. Miller). 



Asplenium ruta-muraria L. 



Midland Zone; on limestone rocks; rare. 



Washington County, Cavetown, Williamsport; just outside the state at 

 Cedar Cliff, Mineral County, W. Va. (1912). 



Asplenium montanum Willd. Mountain Spleenwort. 



Midland and Mountain Zones; on shaded and exposed rocks, preferring 



sandstone; frequent. 

 Washington County, Hancock (814). 



