SOLANACEAE. 303 



1. Solanum triflorum Nutt. On prairies and waste places, and especially 

 in " prairie-dog towns " from Ont. and Alb. to Kans. and Ariz. Alt. 4000- 

 10,000 ft. Cucharas Valley, near La Veta ; Colorado Springs ; Durango ; 

 Ft. Collins; Walsenburg; Ouray; Mountain View; along Uncompahgre 

 River, near Ouray; Rocky Ford; Boulder. 



2. Solanum nigrum L. In waste places, from N. S. and Wash, to Fla. 

 and Tex.; introduced from Europe. College lawn, Ft. Collins. 



3. Solanum interior Rydb. In river valleys among bushes from Neb. and 

 Colo, to Tex. and Calif. Alt. 4000-6000 ft. Canon City; Timnath, Larimer 

 Co. ; along the Platte River, Denver ; Bent's Fort. 



4. Solanum Douglasii Dunal. In valleys of Calif., Ariz, and northwestern 

 Mex. A specimen collected by Fremont is labelled : " Probably from the 

 sources of the Platte, near the mountains." This is probably an error and 

 very likely the specimen came from California. 



5. Solanum villosum (Mill.) Lam. (S. nigrum villosum Mill.) In sandy 

 soil from Wyo. and B. C. to Colo, and L. Calif. Alt. 5000-6000 ft. Boulder. 



6. Solanum Jamesii Torr. In the mountains from Colo, to Tex. and Ariz. 

 Alt. 4000-7000 ft. La Veta ; Trinidad ; Ft. Collins. 



7. Solanum elaeagnifolium Cav. On plains from Mo. and Colo, to Tex. 

 and Calif. ; also in Mex. Pueblo ; Brantly Canon, Los Animas Co. 



6. LYCIUM L. MATRIMONY VINE. 



i. Lycium pallidum Miers. On arid hills from Colo, and Utah to N. M. and 

 Ariz. ; also in Mex. McElmo Creek ; San Juan Valley. 



7. HYOSCYAMUS L. BLACK HENBANE, HOG'S-BEAN. 



i. Hyoscyamus niger L. In waste places from N. S., Mich, and Mont, to 

 N. Y. and Colo.; introduced and naturalized from Europe. Alt. up to 8000 

 ft. Along Uncompahgre River, near Ouray. 



8. DATURA L. THORN-APPLE, JIM SON- WEED. 



Corolla 1.5-2 dm. long; capsule more or less fleshy, bursting irregularly. 



i. D. meteloides. 



Corolla about i dm. long ; capsule dry ; 4-valved. 

 Capsule erect ; plant glabrous. 



Corolla white ; lower prickles of the capsule shorter. 2. D. Stramonium. 



Corolla violet ; prickles all alike. 3. D. Tatula. 



Capsule nodding; plant more or less cinerous. 4. D. discolor. 



1. Datura meteloides DC. Along streams from Colo, to N. M. and Calif.; 

 also in Mex. Alt. 5000-6000 ft. McElmo Canon; Montezuma Co.; Hoven- 

 weep Canon ; Grand Canon. 



2. Datura Stramonium L. In waste places from N. S. and Minn, to Fla., 

 Tex. and Colo.; naturalized from Asia. Boulder Canon; Denver; Cherry 

 Creek; Golden. 



3. Datura Tatula L. In waste places from Ont. and Minn, to Fla., Tex. 

 and Colo.; naturalized from tropical America. Ft. Collins. 



4. Datura discolor Benth. In river valleys from Colo, to Ariz, and Calif.; 

 also in Mex. Colorado, according to Gray, no specimens seen. 



