PTERIDOPHYTES OF NORTHWESTERN OnTARIO—II 83 
43. Dryorreris THELYpTERIS (L.) A. Gray. (As- 
pidium Thelypteris Sw.) Ranging in marshes and wet 
woods from New Brunswick and Manitoba south to 
the Gulf States, this species reaches, for this longitude, 
its northernmost range, at least as to known records, 
around Lake Nipigon. Our stations for it are as follows: 
Longuelac, Long Lake; margin of boggy pond, Jellicoe; 
edge of bog at base of Mt. McKay, Fort William; boggy 
ditch, Watecomb; shore of Jarvis Lake, Hunt. As 
indicated in our records for some of the flowering plants, 
this species also possibly pinches out in the Nipigon 
region, appearing to the east and west of there in grad- 
ually widening areas of distribution, but keeping back 
away from the immediate north and more northeastern 
colder shores of Lake Superior. 
44. Dryopreris Ciintontana (D. C. Eaton) Dowell. 
(Aspidium cristatum var. Clintonianum D. C. Eaton.) 
This species reaches its northwestern limit in Ontario, 
extending from there to Wisconsin, Maine, and North 
Carolina. We did not collect it, but it was reported 
by Macoun from Flat Rock Portage, south end of Lake 
Nipigon, far to the north of its normal range. 
45. DRYOPTERIS MARGINALIS (L.) A. Gray. (Aspid- 
ium marginale Sw.) Nova Scotia and British Columbia 
south to Georgia and Oklahoma, probably reaching 
for this longitude its northern limit in the station re- 
ported by Macoun at Split Rock Portage, on the northern 
part of the Nipigon River. We did not sueceed in 
finding this species at any of our localities. se 
46. Dryopreris FRAGRANS (L.) Schott. (Aspidium 
fragrans Sw.) A northern species, reaching Greenland 
and Alaska and south to a number of the northern 
states, from Maine to Minnesota. North of Lake 
Superior it is one of the most characteristic plants of 
exposed cliffs and particularly of talus slopes. Macoun 
reports it from Pic Island; Red Rock; Nipigon River; 
