262 COMMON' CANADIAN WILD PLANTS. 



rootstock. — Apparentl3' not common, but growing in rich 

 woods near Barrie, Ont. 



2. P. hexagonop'tera, Fee. Fronds triangular-, gener- 

 ally broader than long, 7-12 inches broad. Pinnae lanceo- 

 late; the lowest -very largo, their divisions elongated and 

 pinna tifid, the basal divisions decurrent on the main rhachis 

 and forming a many-angled wing. Fruit-dots not exclu- 

 sively near the margin. — Rich woods. 



3. P.Dryop'teriS, Fee. Fronds broadly triangular in 

 outline, primarily divided into 3 triangular spreading 

 petioled divisions, smooth, the three divisions once- or twice- , 

 pinnate. Fronds from 4 to 6 inches wide. Fruit-dots near 

 the margin. — Eich woods; common. Whole plant delicate, 

 and light green in colour. 



4. P. ealea'rea, Fee. Closely resembling P. Dryopteris, 

 but differs in the fronds being minutely glandular and some- 

 what rigid, and in the lowest pinnae on the lower side of the 

 lateral divisions proportionally smaller. — Eocky hillsides, 

 Eestigouche Eiver. 



10. ASriU'lUIM, Swartz. Shield Fkrn. Wood Fekn. 



* Stipes not chaffy, 



1. A. thelyp'teris, Swartz. Fronds tall and narrow, 

 lanceolate in outline, pinnate, the pinnae deeply pinnatifid, 

 nearly at right angles to the rhachis, linear-lanceolate in 

 outline, tlie margins of the lobes strongly revolute in fruit. 

 Stipe o*er a foot long, and usually longer than the frond.^- 

 Common in low, wet places. 



2. A. Noveboraeen'se, Swartz. Fronds much lighter in 

 colour than the preleding, tapering towards both ends, pin- 

 nate, the pinnae deeply pinnatifid, much closer together 

 than in No. 1, and not at right angles with the rhachis. 

 Veins simple. Lower pinnse short and deflexed.^ — Swamps. 



* * Stipes chaffy. 



3. A. spinulo'sum, Swartz. Stipes slightly chaffy or 

 scaly. Fronds large, ovate-lanceolate in outline, twice-pin- 

 nate, the pinnules deeply pinnatifid (nearly pinnate), and 



