FILICES. 263 



spiny-toothed. Pinnae triangular-lanceolate in outline. 

 The variety intermedium, D. C. Eaton, which is very com- 

 mon in Canadian woods, has the margin of the indusium 

 denticulate and beset with minute stalked glands, the few 

 scales of the stipes pale brown with a dark centre, and the 

 tower pinnce unequal- sided. Var. Boottii (-1. JBoottii, Tuok- 

 erman) has the scales of the stipe pale brown, the frond 

 elongated-oblong or elongated-lanceolate and pinnulesless 

 dissected. Var. dilata'tum, Hook., has the scales of the 

 stipe brown with a dark centre, the frond broader, ovate or 

 triangular-ovate in outline, often twice-pinnate, and the 

 indusium smooth and naked. 



4. A. fra' grans, Swartz. Fronds 4-12 inches high, fra- 

 grant, narrowly lanceolate, with narrowly-oblong pinuately- 

 parted pinnae, their divisions nearly covered beneath by 

 very large thin indusia. — Eooks, Atl. Prov. and northward. 



5. A. eriSta'tum, Swartz. Stipes chaffy with broad scales. 

 Fronds large, linear-lanceolate in outline, once-pinnate, the 

 pinnae deeply pinnatified , the upper ones triangula r-lanceo- 

 late in outline, the lower considerably broader, the lobes 

 out-toothed. Fruit-dots large and conspicuous, half way 

 between the midrib of the lobe and the margin. — Swamps. 



Yar. Clintonia'num, D. C. Eaton, is distinguished chiefly 

 by its greater size and more numerous pinnae and segments. 



6. A. Goldia'num, Hook. A fine fern, the large fronds 

 growing in a circular cluster from a chaffy rootstock. Frond 

 ovate or ovate-oblong in outline, once-pinnate, the pinnae 

 deeply pinnatifid, 6-9 inches long, broadest in the m,iddle, the 

 lobes slightly scythe-shaped, finely serrate. Fruit-dots 

 large, near the midrib of the lobe.— ^ioh moist woods. 



7. A. Fi'liX-mas, Swartz. (Malb-Fben.) Fronds lanceo- 

 late, very chaffy at the base, twice-pinnate except that the 

 upper pinnules run together. Pinnae liuear-lanoeolate, 

 tapering from the base to the summit. Pinnules very ob- 

 tuse, the basal ones inoisely lobed. Fruit dots rather closer 

 to the midvein than the margin. Indusium convex, persist- 

 ent. — Kooky woods, Atl. Prov. 



