Maxon : Pteridophyta collected in Alaska 



641 



Lycopodium alpinum L. 



No. 1 5 1 5. Unalaska, June 17. No. 1525; in moist shady 

 places, vicinity of Nome City, July 22. 



SELAGINELLACEAE 



Selaginella rupestris (L.) Spring. 



No. 1529. Common in dry rocky places on mountain sum- 

 mits near Nome City, July 15. 



Professor Underwood, who has kindly determined this as the 

 forma Sibirica of Milde (Fil. Eu. et AtL 262), suggests that it 

 probably represents a distinct species. 



I 



U. S. National Museum, Washington, D. C 



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