XVIII SESSION EXTRAORDINAIRE EN CORSE, MAI-JUIN 1901 . 
breviore. Hab. Colorado et Wyoming simul, ad North Park, ait. 
8500 ped. (G. Osterhout). 
Phaca astragalinà DC. f. occidentalis Gandog. — Planta 
americana ab europæa recedere videtur foliolis duplo majoribus 
retusis, basi latius dilatatis, atrovirentibus, vexillo magis striato, 
legumine sublongiore. Talia vidi ac possicleo ex America boreali : 
Colorado ad Como Park Co. ait. 9800 ped. (C. Crandall); Wyo¬ 
ming ad Green Top (Nelson exs. n° 3263); Montana ad Yellowstone 
Park ait. 9000 ped. (Rydberg); Idaho (Heller) ; New Mexico in 
al pi ni s (Wooton). 
