Maxon : Pteridophyta collected in Alaska 639 



Dryopteris spinulosa dilatata (Hoffm.) Underw. 



No. i 506. Vicinity of Nome City, ranging from the base of 

 the mountain to the summit, but reaching its best development in 



Unalaska, J 



July 20. Also, no. 151 1 ; Dutch Harbor, 



Polystichum Lonchitis (L.) Roth. 



No. 1523. Mountains, Unalaska, June 19. 



Filix fragilis (L.) Underw. (Cystoptcris) 



No. 1 508. Common in crevices of rocks in the mountains, 

 nity of Nome City, July 8 and July 28. Also, no. 1717 ; com- 

 1 on rocky ledges, Dutch Harbor, Unalaska, June 15. 



Filix Montana (Lam.) Underw. {Cystopteris) 



No. 1507. Growing only in one station, among willows at the 

 base of Anvil Mountain, four or five miles north of Nome City ; 

 abundant here within a restricted space; July 8 and August 16. 



This species was first recorded from North America upon 



Mountains 



52°- 5 6 



Mt 



(Macoun 

 Mac o mi) 



Quebec (Macoun); near the Current River, north 

 r (Macoun) ; at Kicking Horse Pass, Rocky M 



(/• 



Woodsia Ilvexsis (L.) R. Br. 



No. 1505. Vicinity of Nome City, July 21, August I and 

 August 7. Fairly abundant on rocky ledges, but curiously re- 

 stricted to a belt between 600 and 700 feet m altitude. 



Woodsia glabella R. Br. 



No. 1500. Thriving in dry soil in the shelter of minute ter- 

 races on the side of Anvil Mountain, four or five miles north of 

 Nome City ; widely distributed from base to summit, but nowhere 

 abundant; July 8 and August 16. 



The range of this species, originally described from specimens 



1890. 



*See Hooker, 11. Bor. Am. 2 : 260, and Macoun, Cat. Can. PL, Part V., p. 280 



