158 BRASSIACEAE. 



Petals longer than the sepals, about 2 mm. long ; upper leaves mostly 

 once pinnate, with elongated broad terminal segments. 



7. 5". andrenarum. 



Petals not longer than the sepals, about 1.5 mm. long; upper leaves usually 

 more dissected ; terminal segment narrow, not elongated. 



.8. S. halictorum. 

 Pods 5-8 mm. long. 



Pods acute above, acuminate below ; style obsolete. 9. 5*. pinnata. 



Pods acuminate at both ends; style evident. 10. 5". procera. 



Pedicels erect. 



Pods over i mm. thick. 



Plant green and almost glabrous. 10. S. procera. 



Plant cinereous-pubescent. n. 5". brevipes. 



Pods about .75 mm. thick; plant glandular puberulent, especially the inflores- 

 cence, or glabrous. 12. S. glandulifera. 



1. Sophia leptophylla Rydb. In dry places from Wyo. and Ida. to Colo. 

 Alt. about 6500 ft. Foot-hills, Larimer Co. ; Bosworth's ranch ; Stove 

 Prairie. 



2. Sophia incisa (Engelm.) Greene. On hillsides from Wyo. to N. M. 

 Alt. 6000-9000 ft. Walcott; Chicken Creek; Idaho Springs; southeast of La 

 Veta; Mancos; west of Steamboat Springs; Horsetooth Gulch; Cimarron; 

 Glenwood Springs, Garfield Co. 



3. Sophia purpurascens Rydb. On mountain sides in Colo. Alt. about 

 11,000 ft. Known only from the type locality: Red Mountain, south of 

 Ouray. 



4. Sophia ramosa Rydb. On mountain sides in Colo. Alt. about 9000 ft. 

 Known only from Pitkin. 



5. Sophia filipes (A. Gray) Heller. On hillsides from N. D. and Wash. 

 to Colo. Mancos. 



6. Sophia intermedia Rydb. On hillsides and prairies and in sandy soil 

 from Mich, and B. C. to Tenn. and Calif. Alt. 4000-9000 ft. Sangre de 

 Cristo Creek ; near Ironton, San Juan Co. ; Buena Vista ; Parlin ; Mancos ; 

 plains near Denver; southeast and north of La Veta. 



7. Sophia andrenarum Cockerell. On hillsides and in sandy valleys from 

 Mont, and Wash, to N. M. Alt. 4000-7000 ft. Canon City; Walsenburg; 

 river bluffs north of La Veta; Cucharas Valley, near La Veta; Ft. Collins; 

 New Windsor, Weld Co. ; Los Pinos ; near Poudre River ; Antonito. 



8. Sophia halictorum Cockerell. In sandy valleys from Colo, and Utah to 

 Tex. and N. M. Alt. up to 6000 ft. Walsenburg. 



9. Sophia pinnata (Walt.) Howell. In sandy soil from Va. and Colo, to 

 Fla. and Ariz. Alt. 4000-5500 ft. Plains near Denver; mesas near Pueblo; 

 Ft. Collins; Cache la Poudre; Lamar; Gypsum; New Windsor, Weld Co. 



10. Sophia procera Greene. In sandy valleys from Wyo. to N. M. and 

 Utah. Alt. 7500-9000 ft. Ironton Park, 9 miles south of Ouray; Box Canon, 

 west of Ouray; near Pagosa Peak; Tennessee Pass. 



11. Sophia brevipes (Nutt.) Rydb. (Sisymbrium canescens brevipes 

 Nutt. ; .S. incisum Hartwcgianum S. Wats.; (?) 6". Hartwegianum Fourn.) 

 In sandy valleys, among bushes, from Mackenzie to Minn, and Utah. Man- 

 cos ; east side Poudre River, above Ft. Collins ; Middle Park. 



12. Sophia glandulifera Rydb. In sandy places from Wyo. to N. M. 

 La Veta. 



