58 UNIVERSITY OF COLORADO STUDIES 
Rosa nutkana Presl. WuiLp RosE 
This and the next following species are among the showiest of our roses. 
Altitude: 5,000 to 9,000 ft. Collections: Marshall; Bluebell Canyon; head of 
Gregory Canyon; Pine Glade School. 
Rosa pratincola Greene. WmILD RosE 
Altitude: 4,900 to 7,000 ft. Collections: near Boulder; South Boulder Canyon; 
mouth of Gregory Canyon. 
Rosa sayi Schwein. WILD RosE 
Altitude: 5,000 to 10,000 ft. Collections: South Boulder Canyon, 6,800 ft.; Cope- 
land’s; “Eldora to Baltimore” (Rydberg). 
Rosa woodsii Lindl. Wuitp RosE 
Altitude: 6,000 to 9,000 ft. Collections: Sugarloaf Mountain; Bluebird Mine; 
Spencer Mountain ‘at Eldora. 
Rubus deliciosus James. THIMBLE BERRY 
A shrub, with large handsome, white flowers on hillsides and in gulches. Very 
common. Sometimes planted for ornament. 
Altitude: 5,000 to 10,000 ft. Collections: Valmont Butte; South Boulder Canyon; 
Sugarloaf Mountain; “gulch south of Boulder”? (Rydberg). 
Rubus parviflorus Nutt. FLOWERING RASPBERRY 
A trailing shrub in moist situations among rocks or in shade of trees and bushes. 
Altitude: 7,000 to 9,000 ft. Collection: Magnolia. 
Rubus strigosus Michx. RED RASPBERRY 
This is our common prickly raspberry on mountain roads and hillsides. 
Altitude: 6,000 to 10,000 ft. Bear Canyon; South Boulder Canyon; Bluebird 
Mine; near Ward. 
POMACEAE, Apple FAMILY 
Amelanchier alnifolia Nutt. JuNE BERRY 
Altitude: 5,000 to 9,000 ft. Collections: Sunshine Canyon; Eldora. 
Amelanchier elliptica A. Nels. JUNE BERRY 
On hillsides and slopes. 
Altitude: 6,000 to 8,500 ft. Collections: Sugarloaf Mountain. 
Amelanchier oreophila A. Nels. JUNE BERRY 
Altitude: probably 5,000 to 8,000 ft. Collection: near Boulder. 
Crataegus erythropoda: Ashe. THORN APPLE 
A shrub or small tree with thin, shining leaves, deeply cut and with sharp teeth. 
Found in open canyons and draws; associated with other species of Crataegus to form 
dense thickets. 
Altitude: 5,500 to 6,500 ft. Collections: mouth of Gregory Canyon; “Boulder” 
(Rydberg). 
t In the genus Crataegus I have used the names suggested by Professor T. D. A. Cockerell in his article 
in this number of the Studies. Thus I have written C. erythropoda Ashe, in place of C. cerronis A. Nels. and 
C. coloradensis A. Nels. in place of C. occidentalis Britt., as used by Rydberg in his Flora of Colorado. (See Pro- 
fessor Cockerell’s article in these Studies, Vol. V, p. 41.) 
