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 Caiion ; 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. 5ooo-io,ooo.^Grayback mining camps and Placer 

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

 Cristo Creek ; Horsetooth Gulch ; Dixon Canon. 



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

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

 Mancos; Horsetooth Gulch; Dixon Canon 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. 



I, 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 Canon ; Colorado Springs ; 

 Brantly Canon, 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- -f-- usitatissimum. 



Perennial. 2. L. Lewisii. 



Petals yellow ; sepals usually glandular-ciliate. 



Sepals long-acuminate-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 i 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 Cailon; Veta Pass; New Windsor, Weld 

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

 Co. ; Spring Cafion ; Hahn's Peak. 



