POACEAE. 45 



Beaver Creek; Horsetooth Gulch; Howe's Gulch; Happy Hollow; Brantly 

 Canon; Rabbit-ears, Larimer Co. 



12. Poa compressa L. In woodlands, among bushes and in cultivated places 

 from N. H. and B. C. to N. C. and Calif. Alt up to 9500 ft. Veta Pass, 

 Costilla Co. 



13. Poa aperta Scribn. In the mountains of Colo. Telluride; about 

 Ouray; Breckenridge. 



14. Poa macroclada Rydb. Mountains of Colo. Alt. about 9000 ft. 

 Rogers. 



15. Poa serotina Ehr. In wet meadows and swamps from Newf. and B. C. 

 to N. J. and Calif. ; also in Europe. Alt. 4000-9500 ft. New Windsor, Weld 

 Co. ; plains and foot-hills, near Boulder ; Mountain View ; Fort Collins ; gulch 

 west of Soldier Canon; along Poudre River. 



16. Poa interior Rydb. (Poa nemoralis Am. auth. ; in part.) In wet mead- 

 ows from the Canadian Rockies and Wash, to N. Mex. Alt. 5000-10,000 ft 

 Fort Collins; Ute Pass; Twin Lakes; Estes Park; South Park; Marshall 

 Pass; Beaver Creek; Stove Prairie Hill; hills about Box Canon, west of 

 Ouray ; Cerro Summit ; Andrew's Shetland ranch ; La Plata Canon ; canon 

 west of Pennock's ranch, near Ft. Collins; Table Rock; foot of Mt. Rich- 

 tofen, on Michigan River; Hotchkiss; mountains northeast of Dolores. 



17. Poa crocata Mich. (P. caesia strictior A. Gray, and P. nemoralis 

 Am. auth.; in part.) On hills and dryer meadows from Lab. and Alaska to 

 Vt, Minn, and Ariz. Alt. 5000-13,000 ft. Fort Collins; Happy Hollow; 

 near Narrows ; Mount Baldy ; Barnes' Camp ; foot of Mt. Richtofen, North 

 Park; South Park; Ruxton Creek; Robinson, Summit Co.; headwaters of 

 Clear Creek and alpine ridges east of Middle Park; near Georgetown; in 

 valley near Empire; mountains near Pagosa Peak; Gentian Ridge; West 

 Spanish Peak; mountains between Sunshine and Ward; Graymont; Gunni- 

 son; Cameron's Cone; Crystal Park; Marshall Pass; Anita Peak; Willow 

 Creek, Routt Co. 



18. Poa rupicola Nash. (Poa rupestris Vasey.) On the mountains from 

 Mont and Ore. to Colo, and Utah. Alt. 11,500-13,000 ft. South Park; 

 Gray's Peak; Silver Plume; Pike's Peak; Seven Lakes; near Pagosa Peak. 



A form with more hairy glumes has been collected at the following locali- 

 ties : near Ma'nitou ; Little Kate Mine, La Plata Mountains ; mountain near 

 Veta Pass; mountain meadows, Pike's Peak; Cameron Pass, above timber 

 line. 



19. Poa Pattersonii Vasey. On the mountain peaks of Colo, and Ariz. 

 Alt. 10,000-13,000 ft South Park; headwaters of Clear Creek and alpine 

 ridges east of Middle Park; summit of Mt. Garfield; West Spanish Peak; 

 east of Cameron Pass, above timber line; mountains above Beaver Creek; 

 Como Pass, above timber line. 



20. Poa Grayana Vasey. On the mountains of Colo, and Wyo. Alt. about 

 13,000 ft. Pike's Peak: Peak Slope; Saddle; Devil's Causeway; Cameron 

 Pass. 



21. Poa Lettermannii Vasey. (Poa Brandegei Beal.) On the alpine peaks 

 of Colo, and Wyo. Alt. about 14,000 ft. Gray's Peak. 



22. Poa alpina L. In wet places on the mountain tops, along streams and 



