POACEAE. 27 



N. M., Ariz, and Mex. — Alt. about 7500 ft. — Mountains, Larimer Co.; La- 

 Veta. 



5. Muhlenbergia cuspidata (Torr.) Rydb. {Vilfa cuspidata Terr.; Sporo- 

 bolus cuspidatus Woods) On dry plains from Man. to Alb., Mo. and Colo. 

 — ^Exact locality not given. 



6. Muhlenbergia Thurberi Rydb. {Vilfa fiUculmis Thurber; Sporobolus 

 filiculmis Vasey; not Dewey) Canons and dry plains from Colo, to W. 

 Tex. and N. M.- — Alt. up to 9500 ft. — Canons west of Ouray. 



7. Muhlenbergia Richardsonis (Trin.) Rydb. {Vilfa Richardsonis Trin. ; 

 Sporobolus depauperatus Coulter in part) On prairies and in meadows from 

 Anticosti to B. C, N. M. and Calif. — Alt. 4000-gooo ft. — Arboles; George- 

 town ; Durango ; Mancos ; Gunnison ; Elk River, Routt Co. ; Grizzly Creek ; 

 West Mancos Canon; North Park; Mountain View, Pike's Peak; Twin 

 Lakes; Colorado Springs; South Park; Alamosa; Como. 



8. Muhlenbergia simplex (Scribn.) Rydb. {Sporobolus simplex Scribn.) 

 In meadows and along brooks from Nebr. to Wyo. and N. Mex. — Alt. 8000- 

 10,000 ft. — Georgetown; mountains between Sunshine and Ward; Twin 

 Lakes; southeast of Jefferson, South Park; Crystal Park. 



9. Muhlenbergia filiformis (Thurber) Rydb. {Vilfa depauperate Aliformis 

 Thurber) In wet places from Wyo. and Ore. to Colo, and Calif. — Steam- 

 boat Springs, Routt Co. 



10. Muhlenbergia aristata Rydb. {Sporobolus aristatus Rydb.) Perhaps 

 only a variety of the preceding. In wet places from Wyo. to Utah and Colo. 

 — Alt. about 8500 ft. — Columbine. 



11. Muhlenbergia Wolfii (Vasey) Rydb. {Sporobolus Wolfii Vasey) On 

 wet shores in the mountains of Colo.— Alt. 9000-10,000 ft. — South Park; 

 Twin Lakes; Halfway House. 



12. Muhlenbergia gracilis Trin. On gravelly or sandy soil in the moun- 

 tains from Tex. to Colo, and Calif. ; also Mexico. — Alt. 5000-10,000 ft. — 

 Monument Park; Georgetown; Twin Lakes; Ruxton Dell; caiion northeast 

 side of Cheyenne Mountain; vicinity of Boulder; Como; Home; Buena Vista; 

 Jefferson, South Park; Manitou; Colorado Springs; Cheyenne Canon; Clear 

 Creek; Georgetown; Bosworth's ranch. Stove Prairie; gulch west of Sol- 

 dier Canon ; southeast of Jefferson, South Park ; Middle Park ; Ute Pass ; 

 Empire. 



13. Muhlenbergia subalpina Vasey. (M. gracilis breviaristata Vasey) On 

 dry hills from Wyo. to N. M.— Alt. about 10,000 ft. — Estes Park, Larimer 

 Co. ; Beaver Park ; Twin Lakes ; Ute Pass ; Como. 



14. Muhlenbergia filiculmis Vasey. Perhaps only a depauperate alpine form 

 of the preceding. Mountains of Colo. — Alt. 8500 ft. — Green Mountain Falls; 

 Como. 



15. Muhlenbergia gracillima Torr. On plains and foot-hills and in caiions 

 from Kans. to Colo., Tex. and N. M. — Alt. 4000-10,000 ft. — Huerfano; Mani- 

 tou; Fort Collins; along the Platte River, near Denver; Colorado Springs; 

 Twin Lakes ; Timnath ; near Owl Canon. 



16. Muhlenbergia pungens Thurb. Blow-out Grass. On sand-hills and 

 "bad-lands" from Neb. to Utah.— Alt. 4000-10,000 ft.— Twin Lakes; Ster- 

 ling, Logan Co. 



