Rydberg : Studies on the Rocky Mountain Flora 246 



late, silky and silvery on both sides, about 3 cm. long : raceme 

 1—2 dm. long, lax : flowers scattered ; pedicels and calyx densely 

 pubescent with short strictly appressed silky hairs ; lower lip of 

 the calyx about 5 mm. long, lanceolate, almost twice as long as 

 the short ovate upper one : corolla yellow or light pink ; banner 

 slightly exceeding the wings, with a few short hairs on the back, 

 with a darker spot, about 8 mm. long : pods densely silky pubescent. 



This species is nearest related to /C. sulphureus, but differs in 

 the more silvery pubescence, the smaller flowers and the appressed 

 pubescence of the calyx and pedicels. The type grew at an alti- 

 tude of 1900 m. 



Wyoming: Spread Creek, 1897, F. Tzveedv, 2'ji (type in 

 herb. N. Y. Bot. Garden). 



