GERANIACEAE. 219 



waters of Clear Creek ; Colorado Springs ; Idaho Springs ; Manitou ; Platte 

 Canon; vicinity of Arthur's Rock; near Boulder. 



6. Geranium Pattersonii Rydb. In the mountains of Colo. — Alt. 8000-12,000 

 ft. — Near Empire ; Douglas Mountain, Empire ; Gray's Peak ; Ute Pass ; North 

 Cheyenne Cafion ; Palmer Lake ; near Narrows ; Platte Cafion ; Eldora to 

 Baltimore. 



7. Geranium Fremontii A. Gray. In the mountains of Colo. — Alt. up to 

 9000 ft. — Sand Creek Pass. 



8. Geranium caespitosum James. On hills and in dry mountain valleys 

 from Wyo. and Colo.- — Alt. 5000-10,000. — Grayback mining camps and Placer 

 Gulch ; foothills of Larimer Co. ; Turkey Creek and tributaries ; Sangre de 

 Cristo Creek; Horsetooth Gulch; Dixon Caiion. 



9. Geranium atropurpureum Heller. On hills from Colo, to N. M. and 

 Ariz. — Alt. 7000-8000 ft.— Box Cafion, west of Ouray; Arboles; Ouray; 

 Mancos; Horsetooth Gulch; Dixon Cafion Creek; Dolores. 



10. Geranium Bicknellii Britton. In waste places and on hillsides from 

 N. S. and B. C. to N. Y. and Colo.— Alt. 4000-5000 ft.— Fish Creek Falls. 



2. ERODIUM L. 



1. Erodium cicutarium L. In waste places from N. S. and Ore. to N. J., 

 Colo, and Calif. ; also Mex. Introduced from Europe. — Alt. 4000-7000 ft. — 

 Cucharas River, below La Veta ; South Cheyenne Cafion ; Colorado Springs ; 

 Brantly Cafion, Las Animas Co. ; Deer River ; Palisades ; Hotchkiss ; Ft. Col- 

 lins; Boulder. 



Family 73. LINACEAE Dumont. Flax Family. 

 I. LINUM L. Flax. 



Petals blue ; sepals not glandular-ciliate. . 



Annual. i. L. usitatissiinum. 



Perennial. ;;. L. Lewisii. 



Petals yellow ; sepals usually glandular-ciliate. 



Sepals long-acurainate-aristate, twice as long as the pod. 3. L. aristaium. 

 Sepals not more than half longer than the pod. 



Petals less than i cm. long ; sepals merely keeled or slightly wing-crested. 

 Stem glabrous or slightly and minutely puberulent. 



Lateral veins of the sepals indistinct at least below ; petals 6-7 mm. long. 



4. L. australe. 

 Lateral veins of the sepals strong ; petals about 8 mm. long. 



5. L. rigidum. 

 Stem densely puberulent. 6. L. puberulum. 



Petals over t cm. long ; sepals strongly wing-crested. 7. L. arkansanum. 



1. Linum usitatissimum L. In waste places, escaped from cultivation; 

 native of Europe. — Ft. Collins. 



2. Linum Lewisii Pursh. (L. perenne of Coult. Man.; not L.) On dry 

 plains and hills from Mackenzie and Yukon to Tex. and Calif.; also Mex. — 

 Alt. 5000-10,000 ft. — Cimarron; mesas near Pueblo; Ft. Collins; Los Pinos 

 (Bayfield) ; Mancos ; West Mancos Caiion ; Veta Pass ; New Windsor, Weld 

 Co. ; Palmer Lake ; north of La Porte ; Dixon Caiion ; foot-hills, Larimer 

 Co.; Spring Caiion; Hahn's Peak. 



