114 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Section II. Mariposa. 



Flowers open-campanulate; gland usually densely hairy; capsule and 

 pedicels erect. 



Group I. Oregon Mariposas. 



Type of Group C. nitidus. 



Capsule as in Section I, but erect; leaf (as in Section I) long and glossy, 

 not channeled. Oregon and northeast. 



* Petals with an indigo blotch in the center. 

 Flowers large, white to lavender 17. C. nitidiis. 



** Petals not spotted in the middle; fiowers lilac, smaller than in the 



preceding. 



Flowers strongly arched and barred with yellow 18. C. greenei. 



Flowers less arched; stem bracted midway 19. C. pavofiaceus. 



Similar to last ; stem not often bracted midway. 20. C. longebarbatus. 

 Flowers white, densely hairy above gland 21. C. howellii. 



Group 2. Rocky Mountain Mariposa. 



Type of Group C. gunnisoni. 



Gland transverse and narrow; leaf usually as in Section I. East 

 of the Rocky Mountains 22. C. gunnisoni. 



Group 3. Weed's Mariposa. 



Type of Group C. weedii. 



Petals covered with slender hairs; capsule narrowly oblong, with thick, 

 obtusely angled cells; radical leaf as in Section I, solitary, long, shining, and 

 not channeled ; bulb heavily coated with coarse black fiber. 



Flowers orange or rarely pink or white 23. C. weedii. 



Flowers purple. . . 23a. C. weedii var. purpurascens (C. plummercs). 

 Petals brownish, short, truncate, not equaling sepals. 



23d. C. weedii var. vestus. 



23^. C. weedii var. obispoensis. 



Group 4. Golden Bowl Mariposas. 



Type of Group C. clavatus. 



Petals yellow, lower half covered with clavate hairs; radical leaves linear 

 and deeply channeled. 



Stem stiffly zigzag 24. C. clavatus. 



Stem not zigzag. Doubtfully placed in this group, but has no cla- 

 vate hairs. . . 25. C. concolor, sp. nov. (C. luteus var. concolor). 



