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 

 Canon; 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 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. (Rubus Nutkanus MOQ.) On 

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

 Alt. 6000-9000 ft. Four-Mile Hill; La Plata Canon; 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 Canon ; near Manitou ; Cheyenne Mountain ; Turkey 

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

 Howe's Gulch; Palmer Lake; Spring Canon; Dixon Canon; 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. R. strigostis. 

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



2. R. occideiitalis. 



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 Canon, 

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

 Cheyenne Canon ; 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. 



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. 



