44 
POACEAE. 
Creeping rootstock often present; panicle narrow and usually lax; 
flowering glumes if at all purplish only slightly so at the very tip ; 
leaves flat. 46. P. Sheldonii. 
1. Poa annua L. In waste and cultivated places, from Lab. and B. C. to 
Ga. and Calif.; also in Mex. Naturalized from Europe.—Alt. up to 9000 ft. 
—Hamor’s Lake, north of Durango. 
2. Poa Bigelovii V. & S. From Tex. to Colo, and Calif.—Alt. up to 6000 
ft.—“ Colorado,” locality not given; Colorado Springs; along Purgatoire 
River, near Trinidad. 
3. Poa pratensis L. In meadows from Lab. and Alaska to Fla. and Calif.; 
also native of Europe and Asia.—Alt. 4000-11,500 ft.—Mountains northeast of 
Dolores; Fort Collins; Marshall Pass; Manitou; Villa Grove; Beaver Creek; 
Dead Lake; Crystal Park; mountains near Pagosa Peak; vicinity of Ouray; 
Cameron Canon; Pagosa Springs; Happy Hollow; Cucharas Valley, near La 
Veta; Sangre de Cristo Creek; La Plata Canon; Parrott City; Pass Creek; 
Cascade Canon; Quimby; along Conejos River, north of Antonito. 
4. Poa cenisia All. (Poa dexuosa Wahl.) In wet places in arctic or alpine 
regions from Greenl. to Alaska; also in Colo.—Alt. about 10,500 ft.—Moun¬ 
tains near Pagosa Peak. 
5. Poa arctica R. Br. In wet places in arctic or alpine regions along the 
arctic coast and Alaska, the Canadian Rockies and Colo.—Alt. 11,000-14,000 
ft.—Gray’s Peak; Mt. Bartlett; Saddle, Pike’s Peak; mountains near Pagosa 
Peak; Chambers’ Lake. 
6. Poa callichroa Rydb. On alpine peaks of Colo.—Alt. about 11,500 ft.— 
Dead Lake; Campton’s Ranch. 
7. Poa pudica Rydb. ( P . arctica Scribn.; in part.) In wet places in alpine 
or subalpine Colo.—Alt. 11,000-13,000 ft.—High mountains about Empire; 
near Pagosa Peak; Stephen’s Mine. 
8. Poa reflexa V. & S. In wet meadows from Mont, and Ore. to N. M.— 
Alt. 8000-13,000 ft.—Twin Lakes; Seven Lakes; Silver Plume; high moun¬ 
tains about Empire; Cameron Pass; Marshall Pass; near Teller, North Park; 
Upper La Plata River; near Pagosa Peak; Democrat Mountain; headwaters 
of Sangre de Cristo Creek; Pass Creek; near Ironton, San Juan Co.; Cham¬ 
bers’ Lake; Ute Pass road; Four-Mile Hill. 
9. Poa leptocoma Bong. In wet meadows from Mont, and Alaska to Colo, 
and Calif.—Alt. 8500-12,500 ft.—Villa Grove; Pike’s Peak Vall^; chaparrel- 
covered hills southeast of Ouray; near Pagosa Peak; Columbine; Chicken 
Creek; Upper La Plata River; Ruby; Beaver Creek; Cameron Pass; Little 
Kate Mine, La Plata Mountains. 
10. Poa alpicola Nash. (Poa laxa Thurb.) In wet places on the alpine 
peaks of Colo, and Utah; perhaps also Calif.—Alt. 11,500-13,000 ft.—Long’s 
Peak; headwaters of Clear Creek and alpine ridges east of Middle Park; 
Bottomless Pit, near Pike’s Peak; top of Mt. Hayden; Estes Park; Gray’s 
Peak. 
11. Poa platyphylla Nash & Rydb. (Poa occidentalis Vasey.) Along 
mountain streams of Colo, and N. M.—Alt. 7000-10,500 ft.—Near Pagosa 
Peak; Veta Pass; Cucharas River, near La Veta; Ojo; Wahatoya Canon; 
headwaters of Sangre de Cristo Creek; Bob Creek, west of Mt. Hesperus; 
