Woodwardia 



POLYPODIACEAE 



55 



50 



Map 32 



Asplenium Trichomanes L. 



50 



Map 33 



Asplenium cryptolepis Fern. 



50 



Map 34 



Woodwardia virginica IL ) Sm. 



Flora, ed. 2, not L.) American Wall-rue Spleen wort. Map 33. My only 

 specimens are from the rocks of the bluff of the Ohio River near Madison 

 and in Cliffy Falls State Park, Jefferson County. It was reported also from 

 Clark and Floyd Counties by the editors of the Botanical Gazette in their 

 list of the plants of Indiana, published in 1881. In 1939 R. M. Kriebel 

 found it in the eastern part of Clark County. 

 Vt. to n. Mich., southw. to N. C, Ala., and Mo. 



11. WOODWARDIA J. E. Smith 



1. Woodwardia virginica (L.) Sm. (Anchistea virginica (L.) Presl) 

 Virginia Chainfern. Map 34. This fern is infrequent to very local in the 

 area shown on the map. Usually where it is found it is common. It grows 

 in bogs and marshes. Its preferred habitat is old tamarack bogs and its 

 most common associate is Chamaedaphne. 



The sterile fronds of this species resemble those of Osmunda, Dryopteris, 

 and Athyrium, but the fronds of Woodwardia may be distinguished by the 

 areolae in the venation along the midrib. 



N. S. to Fla., La., and Ark., chiefly along the coast; also inland in the 

 Great Lake Region. 



12. PELLAEA lank Cliffbrake 



Stipe, rachis, and rachilla pubescent with long multicellular hairs, usually more or 

 less densely so, especially on the rachilla, scabrous to the touch. .1. P. atropurptirea. 



Stipe, rachis, and rachilla glabrous or with a few scattered hairs, smooth to the touch. 

 2. P. glabella. 



1. Pellaea atropurpurea (L.) Link. Purple Cliffbrake. Map 35. 

 Infrequent to very local in shallow soil on calcareous rocks. These rocks 

 usually are the perpendicular cliffs and ledges along streams but are often 

 small or large detached fragments at the base of cliffs. Sometimes it is 

 found in the seams of stratified rock outcrops only a few feet high. It 

 grows in both shade and sun, preferring shade of medium density. My 



