188 ROSACEAK. 



Soldier Canon; Gmymont ; Ft. Collins; Happy Hollow; Elk Canon; Bos- 

 worlh's ranch ; Boulder. 



2. Geum oregonense (SchciUz) Rydb. (G. urbanum orcgonciise Scheutz; 

 G. macrophyllum Coulter, in part; not Willd.) In mountain meadows from 

 Mackenzie and B. C. to N. M. and Calif.— Alt. 6000-10,000 ft. — La Plata 

 Canon ; Veta Pass ; Marshall Pass ; Cascade Canon ; Chicken Creek, west of 

 Mt. Hesperus; Grizzly Creek; Chambers' Lake; White River Plateau; 

 Hounold ; Yampa ; Victoria; Ironton Park, nine miles south of Ouray; Man- 

 cos; Castle Canon; Arapahoe Pass; Elk Canon; Beaver Creek; Rico; foot- 

 hills, Larimer Co.; Medicine Bow Mountains; Arapahoe Pass; Empire; 

 Eldora to Baltimore; Steamboat Springs. 



3. Geum rivale L. In swamps and wet meadows from Newf. and B. C. 

 to N. J. and Colo. — Alt. 8000-9000 ft. — Estes Park; Twin Lakes; headwaters 

 of Sangre de Cristo Creek; Indian Creek Pass; Victoria; Parlin, Gunnison 

 Co.; Ironton Park, nine miles south of Ouray; Crystal Park; Empire; 

 Walden. 



14. SIEVERSIA R. Br. Mountain Avens. 



Petals light purple; styles in fruit much elongated, plumose. i. S. ciliata. 



Petals yellow ; styles scarcely elongating in fruit, appressed hairy. 



2. S. turbinata. 



1. Sieversia ciliata (Pursh) Don. {Geum ciliatuni Pursh; G. iriflorum 

 Pursh) On hills from Lab. and B. C. to N. Y. and Calif.; also in Mex.— 

 Alt. 8000-12,000 ft.— Como, South Park; Mt. Harvard; Chicken Creek, West 

 La Plata Mountains; North Park; Twin Lakes; Pike's Peak; Pagosa; near 

 Graymont; Marshall Pass; Van Boxle's ranch, above Cimarron; west of 

 Ouray; Red Mountain road, south of Ouray; Dead Lake; Palsgrove Canon; 

 Arapahoe Pass; on the Michigan; Big South; near Silverton ; Beaver Creek. 



2. Sieversia turbinata (Rydb.) Greene. {Geum turbinatum Rydb.; G. 

 Rossii T. & G. ; not Ser.) On the higher peaks from Wyo. to N. M. and 

 Ariz.— Alt. 10,000-14,000 ft. — Gray's Peak; Uncompahgre Peak; Cameron 

 Pass; Pike's Peak; West Spanish Peak; near Pagosa Peak; Cumberland 

 Basin, La Plata Mountains; Bear Creek Divide, West La Plata Mountains; 

 Flat Top Mountains; Alpine Tunnel; Carson; Beaver Creek; Boreas; 

 Devil's Causeway; Graymont; Berthoud Pass; Ethel Peak. 



15. FALLUGIA Endl. 



I. Fallugia acuminata (Woot.) Rydb. {F. paradoxa Coult., in part; and v. 

 acuminata Woot.) On dry hills from Colo, and Utah to Tex and Ariz. — Alt. 

 8000-9000 ft. — Sangre de Cristo Creek; Cimarron. 



i6. HOLODISCUS Max. 



Leaf-blades broadly rounded ovate-spatulate, more or less double-toothed, with 



rounded teeth. i. H. dumosus. 

 Leaf-blades oval or obovate, with simple ovate teeth. 



Leaf-blades 1.5-4 cm. long; panicle open, with spreading or reflexed, long 



branches. 2. H. australis. 



Leaf-blades 1-1.5 cm. long; panicle contracted, with short few-flowered 



branches. 3- f^- microphyllus. 



