ISO ROSACEAE. 



3. Opulaster glabratus Rydb. Along streams in the mountains of Colo. — 

 Alt. 5000-11.000 ft. — West Spanish Peak; Turkey Creek and tributaries; Rist 

 Canon; North Poudre; Boulder. 



3. Opulaster monogynus (Torr.) Kuntze. (Pliysocarpus Torreyi Max.) 

 On the mountain tops from S. D. and Wyo. to N. M. and Nev. — Alt. 6000- 

 9000 ft. — Denver; Cheyenne Canon; Colorado Springs; Flouissant; Upper 

 Bear Creek ; Pike's Peak ; foot-hills, Larimer Co. ; Glen Eyrie ; Livermore, 

 Larimer Co.; Idaho Springs; Cascade Canon; Engelmann Canon; near 

 Georgetown; Minnehaha; Black Canon; headwaters of Pass Creek; Stove 

 Prairie Hill; North Poudre; Table Rock; Pennock's mountain ranch; Howe's 

 Gulch ; Rist Canon ; Baxter's ranch. 



2. RUBACER Rydb. Flowering Raspberry, Salmon-berry. 



I. Rubacer parviflorus (Nutt.) Rydb. (Rubiis Nutkanus Mo<;.) On 

 wooded hillsides from Ont. and Alaska to N. M. and Calif. ; also in Hex. — 

 Alt. 6000-9000 ft. — Four-Mile Hill; La Plata Canon; Steamboat Springs; 

 RedclifTe; Eagle Cliff; Box Canon, west of Ouray; Ouray; near Pagosa 

 Peak ; Fish Creek ; Rico ; Rabbit-Ear Range, Routt Co. 



3. OREOBATUS Rydb. 



I. Oreobatus deliciosus (James) Rydb. (Rubus deliciosus James) On 

 the mountains of Colo. — Alt. 5000-10,000 ft. — Pike's Peak ; Manitou ; head- 

 waters of Clear Creek ; Apex ; foot-hills west of Ft. Collins ; Colorado 

 Springs ; Cheyenne Canon ; near Manitou ; Cheyenne Mountain ; Turkey 

 Creek and tributaries; Georgetown; Bear Canon; Ute Pass; Rist Canon; 

 Howe's Gulch; Palmer Lake; Spring Canon; Dixon Cafion; Stove Prairie 

 Hill ; Horsetooth Gulch ; gulch south of Boulder ; Engelmann Canon. 



4. RUBUS L. Raspberry, Blackberry, Bramble. 



Stems, pedicels and petioles glandular bristly, not prickly ; fruit red. 



1. 7?. strigosiis. 

 Steins, pedicels and petioles more or less prickly, not bristly ; fruit black. 



2. R. occidentalis. 



1. Rubus strigosus Michx. On hills and in rocky woods from Lab. and 

 Mackenzie to N. J. and Neb. — Alt. 6000-10,000 ft. — Minnehaha; Box Cafion, 

 west of Ouray; Ouray; Manitou; Grayback mining camps and Placer Gulch; 

 Cheyenne Canon ; Chambers' Lake ; foot-hills, Larimer Co. ; Upper West 

 Mancos Canon; Campion's ranch; Cache la Poudre; Fish Creek Falls, 

 Routt Co. 



2. Rubus occidentalis L. In open woods and among bushes from Que. and 

 Minn, to Ga. and Colo. — Locality not given, perhaps doubtful. 



5. POTENTILLA L. Five-finger, Cinquefoil. 



Flowers many in very leafy cymes ; annuals or biennials or short-lived perennials ; 



style fusiform. I. Supinae. 



Flowers cymose, but cymes not very leafy, generally rather few-flowered ; peren- 

 nials with a strongly developed rootstock. 



