ITS GROSSIILARIACEAE. 



7. Ribes Wolfii Rotlirock. (R. monollonicum Greene) In woods from 

 Colo, and Utali to N. M. and Ariz. — Alt. 7500-12,000 ft.— Van Boxle's ranch, 

 above Cimarron; Redcliffe. Eagle Co.; canons near Ouray; Mt. Abram, 

 Ouray; Box Canon; Bear Creek Divide; Wahatoya Canon; Hinsdale Co.; 

 Buffalo Pass. Park Range; Leroux. 



8. Ribes viscosissimura Pursh. On wooded hillsides from Mont, and Wash, 

 to Colo, and Calif. — .Steamboat Springs, Routt Co. 



9. Ribes floridum L'ller. In wet woods from N. S. and Mont, to Va. and 

 Colo. — Notch Moimtain. 



10. Ribes pumilum Nutt. (/v. cercum Coulter, in part.) On dry hills from 

 Mont, to N. M. and Ariz. — Alt. 5000-10,0000 ft. — Foot-hills west of Ft. Col- 

 lins; Larimer Co.; Ute Pass, Walsenburg; Colorado Springs; Turkey Creek 

 and tributaries; Cucharas Valley, near La Veta; near Boulder; Horsetooth 

 Gulch; La Porte; Rist Cafion ; Howe's Gulch; Soldier Canon; Stove Prairie; 

 Trinidad; L'lc Pass; Beaver Creek. 



11. Ribes inebrians Lindl. {R. cereum Coulter, in part.) On hills from 

 Mont, to N. M. and Utah. — Alt. 5000-11,000 ft. — Ouray; Buena Vista; Cerro 

 Summit; hills about Box Cafion, west of Ouray; Bob Creek, West La Plata 

 Mountains ; West Mancos Canon ; mesas near Colorado Springs ; Minturn ; 

 Lake City; Pike's Peak trail. 



12. Ribes longifolium Nutt. {R. aurciim T. & G., mainly; not Pursh.) On 

 the plains and in the foot-hills from S. D. and Wyo. to Kans. and Ariz. — 

 Alt. 4000-7000 ft. — Ft. Collins; near Denver; Steamboat Springs; West 

 Soldier Cafion; Horsetooth Gulch; Manitou; Boulder; Villa Grove; Rocky 

 Mountains. 



Family 66. ROSACEAE Juss. Rose Family. 



Hypanthium neither fleshy nor prickly nor strongly constricted at the throat, if at 

 all inclosing the fruit merely loosely investing it. 

 Carpels few, becoming 2-4-seeded follicles, more or less united at the base and 

 opening along both sutures ; shrubs with palmately veined leaves. 



1. Opulaster. 

 Carpels usually many, rarely few, becoming i -seeded (rarely 2-seeded) achenes 



or drupelets. 

 Carpels becoming more or less fleshy drupelets. 



Styles club-shaped ; stigmas 2-lobed ; receptacle flat ; unarmed shrubs with 

 shreddy bark and digitately veined, maple-like leaves. 

 Drupelets capped by hard hairy cushions ; style glabrous ; erect shrubs. 



2. RUBACER. 



Drupelets without cushions ; styles hairy ; prostrate or reclining shrubs. 



3. Oreobatus. 

 Styles filiform, glabrous ; stigmas capitate : receptacle hemispherical, conical 



or nipple-shaped; drupelets without cushions; leaves in our species pin- 

 nate and stem prickly. 4. Rubus. 

 Carpels dry achenes. 



Style articulated to the ovary and deciduous. 



Style terminal or nearly so ; ovules pendulous and anatropous. 



Stamens inserted very near the base of the receptacle on a more or less 



evident annular thickening. 5. Potentilla. 



Stamens separated from the receptacle by a wide open space ; no indica- 

 tion of an annular thickening. 6. Horkelia. 

 Style lateral or basal ; ovules not pendulous. 



