CONTRIBUTIONS TO WESTERN BOTANY. 633 



HOSACKIA RIGIDA Var. NUMMULARIA. 



No. 5224k. May 15, 1894, Rockville, Utah, 4000° 

 alt,, in red sand. 



No. 5i25d. April 28, 1894, Diamond valley, Utah, 

 4000" alt., in red sand. 



No. 5098d. . April 23, 1894, 10 miles south of Black 

 Rock Spring, Arizona, 4500" alt., in gravel, among juni- 

 pers. 



No. 5128. April 30, 1894, Santa Clara valley, Utah, 

 3000" alt., in gravel, along the river bed. 



Herbaceous throughout, prostrate, lower leaflets round, 

 all the leaves except the very uppermost short-petioled, 

 whole plant ashy, root woody, stems 1-2 >^° long, form- 

 ing loose mats and decumbent or procumbent. 



This abounds in sandy or gravelly places, mostly along 

 the streams. To this I also refer Wright's No. 1357, 

 Palmer's specimen from Fort Huachuca, Arizona, both 

 being pubescent; also a specimen of the Mexican Bound- 

 ary Survey, a specimen from Parish collected at Lowell, 

 Arizona, Rusby's specimen from the San Francisco Moun- 

 tains, Arizona, collected in April, and a specimen from 

 western Texas by Neally, all in the National Herbarium. 



Phaca L. Among the genera recently revived for 

 American plants there is none which deserves so little atten- 

 tion as this; but this genus is revived, apparently, in order 

 to avoid the odium attaching to relegating so large and 

 common a genus as Astragalus to synonymy because of 

 priority by position. It is curious to see the twins Phaca 

 bisulcata and Astragahcs scobinatulus in separate genera; 

 also Astragalus Shortianus and Phaca -pectinata, while 

 Astragalus racemosus, oroboides 2ind gracilis, with strictly 

 one cell, are relegated to Astragalus, and A. aborigi- 

 num, alpinus, Robbinsii, with rudiments of a septum, are 

 also retained. It would be interesting to see what kind 



2d See., Vol. V. ( 41 ) October 3, 1895. 



