'rni<; Kkkx Loxkr's ( 'omi'an'iox If)!) 



rust.y, bristle-like chaff. Pinnate, the pinna^ crowded, 

 sessile, cut into oblong segments. Fruit-dots near the 

 margin often confluent at maturity. Indiisium divided 

 nearly in the center into slender hairs which are curled 

 over the sporangia. Stipes jointed an inch or so abo^'e 

 the rootstock. 



The rusty Woodsia is decidedly a rock-lo\'ing fern, and 

 often grows on high cliffs exi)oscd to the sun; its rootstock 

 and fronds arc covered with sih'er-white, liair-like .scales, 

 especially iniderneath. These scales turn brown in age, 

 whence tlie name, rusty. As the short stipes separate 

 at the joints from the rootstock, they leave at the base a 

 thick stubble, which .scr^'es to identify the fern. Exposed 

 rocks, Labrador to North Carolina and westward. Rather 

 common in New England. Said to be xevy abundant on 

 the trap rock hillocks about Little Falls, N. J., where 

 it grows in den.se tufts. 



(2) NORTIIERX Wof)l)SI.\. AlI'IXE ^^'00DSIA 



Woodsia aljiina. Woodsia Injperborea 



P'ronds narrowl.y lanceolate, two to six inches long, 

 smooth abo^•e, somewhat hairy beneath, pinnate. Pinnw 

 triangular-o\-ate, obtuse, lobed, the lobes few and nearly 

 entire. Fruit-dots rarely confluent. Indusium as in 

 Woodsia ilreusis. 



Thought by some botanists to be a smooth form of 

 Woodsia ihensis. It was discovered in the United States 

 by Horace jNIann, in 186.3, at Willoughby Lake, Vt. 

 Twenty years or more later it was collected by C. H. Peck 

 in the Adirondacks, who supposed it to be Woodsia 



