14^8 WOODSIA 



NORTHERN or ALPINE WOODSIA: 



Woodsia alpina. 

 {W. hyperborea.) 



Fronds 2 to 6 inches long, narrowly lance- 

 shaped, growing in little tufts, smooth above, spar- 

 ingly chaffy beneath, pinnate; pinnae somewhat 

 triangular, blunt, cut nearly to the midrib into 

 rounded lobes. 



Indusium consists of a few hair-like processes 

 which radiate from beneath the round sori. 



Found in the mountains of New York, Vermont 

 and Maine, and northward; rare. 



