118 



Equisetum laevigatum A. Br. Sandy soil, damp thickets. Hot Springs Co.. 

 Park Co., Sheridan Co., Uinta Co. 



^Equisetum Nelsoni (Eat.) Schaffner. Sandy-gravelly bar of creek bed. Col- 

 lected but once by Prof. Schaffner. Big Horn Co. 



Equisetum robustum A. Br. Moist ground, stream banks. Teton Co., Al- 

 bany Co., Uinta Co. 



Equisetum variegatum Schleich. Wet meadows, swamps. Albany Co., 

 Teton Co. 



#Isoetes Bolanderi Engelm. Alpine swamps and lakes. Albany Co., Carbon 

 Co., Sublette Co., Yellowstone Nat. Park. 



fLycopodium annotinum L. Collected but once in Yellowstone National 

 Park. No habitat given. 



Selaginella densa Rybd. The common Selaginella in the mountains, on 

 rocky soil and barren ridges. Albany Co., Johnson Co., Park Co., Sublette Co., 

 Uinta Co., Yellowstone Nat. Park. 



^Selaginella scopulorum Maxon. Open, rocky slopes. Big Horn Co., Sub- 

 lette Co. 



^Selaginella selaginoides Link. Collected in only one locality, at 8,000 ft. 

 on a mossy lake shore. Sublette Co. 



University of Wyoming, 

 Department of Botany, 



Rocky Mountain Herbarium 



