248 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Montana : Bridger Mountains, June 17, 1897, Rvdberg & Bcssey^ 

 44-go (type) ; Jack Creek, July 14, 449 r ; Pony Mountains, July 8, 

 448^; Spanish Basin, 1896, J. H. Flodman, 6j6, 6j8 and 6jg; 

 Bridger Pass, djy and 641 ; Little Belt Pass, 640; Bozeman, 1892, 

 W. T. Shazu ; Silver Bow Co., Hattie Hammond ; Trail Creek, 

 1887, Tweedy^ ijy. 



Yellowstone Park: 1884, J^. Tzveedy, 80. 



Utah : Logan, 1895, Rydberg, 2jOj. 



* Homalobus serotinus (Gray) ; Astragalus serotinus Gray, Pac. R. 



R. Rep. 12 : 51. 



Scarcely distinct from H. decunibens. 



Montana: North Box Elder Creek, 1886, R. S. W/IIiams, p^. 



Homalobus campestris Nutt. ; Torr. & Gray, Fl. N. Am. i: 351; 



Astragalus campestris Gray, Proc. Am. Acad. 4: 229 [Man. R. 



M. 68]. 



The t} pe specimen, in the Herbarium of Columbia University, is 

 decumbent, slender, grayish-strigose, and has narrow leaves. It is 

 very hard to distinguish this from H. serotimis, but it has shorter 

 racemes and larger flowers with more upturned banner. 



Montana: Park Co., 1887,/^. Tzveedy ; Beaver Head Co., 1888, 

 Tzvecdy, 204; Mission Range, 1883, Canby, 8j; Boulder Creek, 

 1883, Scribner, 2yf. 



* Homalobus tenuifolius Nutt. ; Torr. & Gray, Fl. N. Am. i : 352. 



This has been included in //. campestris^ but is a very low and 

 bushy plant, less than i dm. high, with short narrowlv linear leaf- 

 lets. At an altitude of 2000-3000 m. 



Montana: Lima, 1895, Rydberg, 2yo6; Helena, 2jo8; Bridger 

 Mts., June 14 and 15, 1897, Rvdberg cf- Ressey, 44^4 and 44ps i 

 June II, 44PJ ,' Old Hollowtop, Pon}-, July 7, 44^2. 



Yellowstone Park : 1888, Dr. C/ias. H. Hall ; 1884, Tweedy^ 

 81. 



Homalobus junceus Nutt. ; Torr. & Gray, Fl. N. Am. i : 351 ; As- 

 tragalus jnnceus K. Gra}', Proc. Am. Acad. 4: 230 [Man. R. 

 M.'68]. ' 



Dry plains, up to an altitude of 2000 m. 

 Montana: Helena, 1891, F. D. Kelsey ; Mt. Helena, 1883, 



Canby, 84 ; Scribner, 2yg. 



* Homalobus Palliseri (Gray) ; Astragalus PalUseri Gray, Proc. 



Am. Acad. 4 : 227. 



