228 
FRANGULACEAE. 
Umbels mostly terminal; leaves dull beneath, glabrate or villous. 
2. C. pubescens. 
Umbels mostly axillary; leaves silky beneath. 
Leaf-blades distinctly glandular-serrate; plant not spiny. 3. C. subsericeus. 
Leaf-blades obsoletely denticulate or entire ; branches often ending in spines. 
4. C. Fendleri. 
1. Ceanothus velutinus Dotigl. On hillsides from Mont, and B. C. to Colo, 
and Calif.—Alt. 6000-7000 ft.—Headwaters of Clear Creek; near Empire; 
Steamboat Springs; Walton Creek; Four-Mile Hill, Routt Co.; Sheephorn 
Divide; between Pallas and Sydney; Poudre Canon; mountains between 
Sunshine and Ward; Pinkham Creek; Beaver Creek. 
2. Ceanothus pubescens (T. & G.) Rydb. (C. ovatus pubescens T. & G.) 
In sandy soil from Mich, and S. D. to Mo. and Colo.—Alt. 4000-8000 ft.— 
Foot-hills, Larimer Co.; Colorado Springs; Pennock’s mountain ranch; 
Horsetooth Mountain; Monument; Boulder. 
3. Ceanothus subsericeus Rydb. Foot-hills of Colo.—Alt. about 6000 ft.— 
Larimer Co. 
4. Ceanothus Fendleri A. Gray. In woods and on hillsides from S. D. and 
Wyo. to N. M. and Ariz.—Alt. 5000-9000 ft.—Headwaters of Clear Creek; 
Denver to Idaho Springs; Sangre de Cristo Creek; Mancos; Pagosa Springs; 
Grayback mining camps and Placer Gulch; Boulder; west of Ouray; Mt. 
Harvard; southeast of Ouray; Rist Canon; vicinity of Arthur’s Rock, Lari¬ 
mer Co.; Leroux Creek; Horsetooth Gulch; Pennock’s mountain ranch; 
Horsetooth Mountain; mountains between Sunshine and Ward. 
Family 85. VITACEAE Lindl. Grape Family. 
Hypogynous disk present; leaf-blades simple. 1. Vitis. 
Hypogynous disk wanting or obsolete ; leaf-blades digitately 5-7-foliolate. 
2. Parthenocissus. 
1. VITIS L. Grapes. 
1. Vitis vulpina L. (Vitis riparia Michx.) Along streams from N. B. 
and N. D. to W. Va., Tex. and Colo.—Alt. 4000-9000 ft.—Walsenburg; Dixon 
Canon, Larimer Co.; Ft. Collins; banks of Cache la Poudre; Rist Canon; 
gulch west of Pennock’s; Boulder. 
2. PARTHENOCISSUS Planch. Virginia Creeper, American Ivy. 
Aerial rootlets present; tendrils with disks. 1. P. quinquefolia. 
Aerial rootlets lacking ; tendrils without disks. 2. P. laciniata. 
1. Parthenocissus quinquefolia (L.) Planch. In woods and on banks from 
Que. and Man. to Fla. and Tex.—Reported from Colorado {Meehan ), but 
doubtful. 
2. Parthenocissus vitacea Hitchc. (P. quinquefolia laciniata Planch.; P. 
lacinata Small) On river banks and in woods from Mich, and Wyo. to Ohio 
and Ariz.—Alt. 4000-6000 ft.—Foot-hills, Larimer Co.; Cheyenne Canon; Ft. 
Collins; North Cheyenne Canon; Golden; vicinity of Arthur’s Rock; near 
Boulder. 
