364 
CARDUACEAE. 
20. Erigeron concinnus (H. & A.) T. & G. On arid plains and hills from 
Mont, and B. C. to N. M. and Calif.—Alt. 4000-7000 ft.—Mancos; Grand 
Junction; Los Pinos (Bayfield); Durango; Dolores. 
21. Erigeron aphanactis (A. Gray) Greene. ( E. concinnus aphanactis A. 
Gray) On dry plains from Colo, and Nev. to Calif.—Antonito; Grand Junc¬ 
tion. 
22. Erigeron simulans Greene. ( E . Engelmannii arenicola A. Nels.) On 
dry hills and sandy flats from Mont, to Colo, and Utah.—Alt. 6000-8000 ft.— 
Glenwood Springs ; Cimarron ; Gunnison ; Salida; Buena Vista. 
23. Erigeron Engelmannii A. Nels. On dry plains of Wyo. and Colo.— 
Gunnison; Gypeum; Table Rock. 
24. Erigeron microlonchus Greene. On dry plains from Wyo. to Colo, and 
Ariz.—Alt. about 7000 ft.—Cimarron. 
25. Erigeron elatior (A. Gray) Greene. ( E. grandidorum elatior A. Gray) 
In wet places in the mountains of Wyo. and Colo.—Alt. 8000-12,000 ft.—Red 
Mountain; Silver Plume; Mt. Baldy; near Pagosa Peak; east side of Bald 
Mountain; Georgetown; Rabbit-Ear Pass; White River Plateau; Steamboat 
Springs; near Teller, North Park; Ruby; Villa Park; Boreas; Leroux Park; 
Rabbit-Ear Range, Routt Co.; near Empire; headwaters of Clear Creek; 
Robinson; Red Mountain; Silver Plume; Berthoud Pass. 
26. Erigeron Coulteri Porter. In damp places in the mountains of Colo, 
and Utah.—Alt. 9000-12,000 ft.—Lake City; Hinsdale Co.; Bard Valley, near 
Empire; Bob Creek, west of Mt. Hesperus; Rabbit-Ear Pass; La Plata 
Canon; Leroux Creek, Delta Co.; East River; near Pagosa Peak; Red Moun¬ 
tain, about Ouray; Ironton, San Juan Co.; Mt. Harvard; Ironton Park, nine 
miles south of Ouray; Silverton; Berthoud Pass. 
27. Erigeron salsuginosus (Richardson) A. Gray. In wet ground from 
Alb. and Alaska to Colo, and Calif.—Alt. 9000-12,000 ft.—Middle Park; 
Chambers’ Lake; Georgetown; near Pagosa Peak; Minnehaha; Lake Mo¬ 
raine; Cameron Pass; Marshall Pass; mountains above Ouray; Hahn’s Peak; 
Mt. Harvard; Red Mountain; Ruby; Ruxton Park, Pike’s Peak; Silver 
Plume; Beaver Creek; Trappers’ Lake; Berthoud Pass; Buffalo Pass; Gray’s 
Peak; between Como and Boreas; Twin Lakes; Devil’s Causeway; summit 
of North Park Range, Larimer Co.; Hahn’s Peak. 
Erigeron salsuginosus glacialis (Nutt.) A. Gray. In the higher mountains 
from Wyo. to N. M. and Utah.—Alt. 9000-12,000 ft.—High Mountains, near 
Empire; Caribou; Veta Pass. 
28. Erigeron superbus Greene. In the mountains of Colo.—Alt. 7500-12,000 
ft.—Mountains near Empire; near Pagosa Peak; Minnehaha; Breckenridge; 
Villa Grove; Idaho Springs; Artist’s Glen and Halfway House, Pike’s Peak; 
Box Canon, west of Ouray; Baxter’s ranch; chaparral-covered hills southeast 
of Ouray; mountains between Sunshine and Ward; Stove Prairie Hill; Mar¬ 
shall Pass. 
29. Erigeron salicinus Rydb. In the mountains of Colo.—Alt. up to 10.000 
ft.—Pagosa Springs; Keblar Pass ; Narrows. 
30. Erigeron macranthus Nutt. In the mountains from Mont, and B. C. to 
Colo., Utah and Ore.—Alt. 7000-10,000 ft.—Lake City; Platte River; west 
of Ouray; Jack’s Cabin; Steamboat Springs; Keblar Pass; Durango; Cerro 
Summit; mountains, Larimer Co.; La Veta; La Plata Canon; Mancos; Sun- 
