202 FABACEAE. 



mountains south of Ward, Boulder Co. ; Devil's Causeway ; above Beaver 

 Creek ; Leroux Creek ; Twin Lakes ; Spicer. 



14. Trifolium salictorum Greene. Mountains of Colo. Alt. about 12,000 

 ft. Carson. 



15. Trifolium Parryi A. Gray. In the mountains of Wyo., Utah and Colo. 

 Alt. 10,000-13,000 ft. Twin Lakes; headwaters of Clear Creek; Tennes- 

 see Pass, seven miles west of Leadville ; Cameron Pass ; Buena Vista, Chaf- 

 fee Co.; Marshall Pass; mountains above Boreas; Estes Park; Silver 

 Plume; Gray's Peak; Robinson; Chambers' Lake; Graymont; Leroux 

 Creek; above Beaver Creek; Berthoud Pass. 



16. Trifolium Fendleri Greene. In meadows from Colo, to N. M. and 

 Ariz.; also in Mex. Alt. up to 8000 ft. Wahatoya Creek; Gunnison; La 

 Veta; Parlin, Gunnison Co.; Buena Vista; along the Conejos River, north 

 of Antonito; Monte Vista. 



17. Trifolium oxyodon Greene. In meadows from Colo, to Ariz. Alt. up 

 to 7700 ft. Gunnison. 



5. MEDICAGO L. ALFALFA, LUCERNE, MEDIC. 



i. Medicago sativa L. Cultivated from Europe and escaped from Me. and 

 Ida. to Va. and Utah. Alt. 5000-6000 ft. Colorado Springs; Ft. Collins; 

 Boulder. 



6. MELILOTUS Juss. SWEET CLOVER. 



Corolla white; banner a little longer than the wings. i. M. alba. 



Corolla yellow ; banner about equalling the wings. 2. M. officinalis. 



1. Melilotus alba Desv. In waste places from N. S. and D. C. to Ida. 

 and Nev. Naturalized from Europe; also cultivated. Alt. 4000-7000 ft. 

 Cucharas Valley, near La Veta. 



2. Melilotus officinalis (L.) Lam. In waste places from N. S. and La. 

 to Ida. and Colo. Naturalized from Europe; occasionally cultivated for 

 bees. Alt. 4000-6000 ft Ft. Collins; Boulder. 



7. ANISOLOTUS Bernh. BIRD'S-FOOT TREEFOIL. 



i. Anisolotus Wrightii (A. Gray) Rydb. (Hosackia Wrightii A. Gray) 

 In dry soil from Colo, to N. M. and Ariz. Alt. 7000-8000 ft. Dolores; 

 Mancos. 



8. ROBINIA L. LOCUST-TREE. 



i. Robinia neo-mexicana A. Gray. Along streams from Colo, to N. M. 

 and Ariz. Alt. 4000-7000 ft. Trinidad; Walsenburg; La Veta; Denver. 



9. PETERIA A. Gray. 



i. Peteria scoparia A. Gray. Dry regions from Colo, and Utah to N. M. 

 and Ariz. La Plata Valley (Brandegee}. 



10. GEOPRUMNON Rydb. BUFFALO BEANS, GROUND PLUMS. 



Corolla yellowish white, with purple-keel; leaflets oval or obovate. 



i. G. succulentum. 

 Corolla purple ; leaflets oblong to linear. 2. G. crassicarpum. 



