128 UNIVERSITY OF COLORADO STUDIES 



Tribe AGROSTIDEAE 

 STIPA L. Porcupine-grass 



Stipa comata Trin. & Rupr. 



Rydberg, Flora of Colo., p. 24; Coulter-Nelson Manual, p. 50; Daniels, Flora of 

 Boulder, Colo., p. 60. 



On dry plains and hills from Alb. to Alaska, N.Mex. and Calif. Range in Colo. 

 4,ooo-g,ooo ft. 



Collections: Tolland (dry grassland) 8825, 8983; East Lake (dry hillside) 3447; 

 between Tolland and Rollinsville 8728. 

 Stipa viridula Trin. 



Rydberg, Flora of Colo., p. 24; Coulter- Nelson Manual, p. 49; Daniels, Flora of 

 Boulder, Colo., p. 60. 



Dry prairies and hills from Sask. to Mont., Kans. and Utah. Range in Colo. 4,000- 

 9,000 ft. 



Collection: Tolland (dry grassland) 8927. 

 Stipa nelsonii Scribn. 



Rydberg, Flora of Colo., p. 24; Coulter-Nelson Manual, p. 49; Daniels, Flora of 

 Boulder, Colo., p. 60. 



Dry plains and hills from Ass. to Ida. and Colo. Range in Colo. 7,500-10,000 ft. 



Collection: Tolland 8883. 

 Stipa minor (Vasey) Scribn. 



Rydberg, Flora of Colo., p. 24; Coulter-Nelson Manual, p. 49 (as 5. cohimbiana); 

 not listed in Daniels, Flora of Boulder, Colo. 



Dry hillsides and mountain valleys from Mont, to Utah and N.Mex. Range in 

 Colo. 8,000-12,500 ft. 



Collections: Tolland 8824; Park Lake 7882; East Lake (Meadow association) 

 7832, 8701, 8897. 

 Stipa vaseyi Scribn. 



Rydberg, Flora of Colo., p. 24; Coulter-Nelson Manual, p. 49; not listed in Daniels, 

 Flora of Boulder, Colo. 



On foothills and mountain sides from Colo, to Ida., Tex. and N.Mex.; also in 

 Mex. Range in Colo. 5,000-9,000 ft. 



Collection: Tolland 6918. 



MUHLENBERGIA Schreb. Drop-seed-grass 



Muhlenbergia richardsonis (Trin.) Rydb. 



Rydberg, Flora of Colo., p. 27; Coulter-Nelson Manual, not separately listed; 

 Daniels, Flora of Boulder, Colo., p. 61. 



On prairies and in meadows from Anticosti to B.C., N.Mex. and Calif. Range in 

 Colo. 4,000-9,000 ft. 



Collections: Tolland 6873, 6877, 8808; East Lake (Campanula society and in the 

 Meadow association) 3438, 8898. 



