180 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 

 Caiion; North Poudre; Boulder. 



3. Opulaster monogynus (Torr.) Kuntze. {Physocarpus Torreyi Max.) 

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

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

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

 Larimer Co. ; Idaho Springs ; Cascade Caiion ; 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. 



1. Rubacer parviflorus (Nutt.) Rydb. {Rubus Nutkanus Mog.) On 

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

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

 Redcliffe; 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 Caiion; near Manitou; Cheyenne Mountain; Turkey 

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

 Howe's Gulch; Palmer Lake; Spring Caiion; Dixon Caiion; 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. 



I. R. strigosus. 

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



-i. 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 Caiion, 

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

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

 Mancos Canon ; Campton'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. 



S. 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. 



