491 



Psoralea teuuiflora Pursh, Fl. ii, 475 (1814). 



In the foothills, 15 luiles east of Custer, altitude 1,400 m., July 23 (No. 603). 



Psoralea argophylla Pursh, Fl. ii, 475 (1814). 



Rochfortl, altitude 1,600 m., July 12; Custer, altitude 1,650 ni., July 15; Hot 

 Springs, altitude 1,100 m., August 8 (Xo. 604). 



Psoralea cuspidata Pursh, Fl. ii, 741 (1814). 



Among the foothills: Fall Eiver Falls, altitude 1,050 ni., August 10 (No. 605). 



Psoralea esculenta Pursh, Fl. ii, 475 (1814). 



The specimens from Lead City are low, 7 to 10 cm. high, with obovate leaflets and 

 whitish flowers. Hot Springs, altitude 1,100m., June 18; Hermosa, altitude 1.050 ni., 

 June 23; Lead City, altitude 1,700 m., July 4; Rochford, altitude 1,700 m., July 12 

 (No. 606). 



Parosela enneandra (Nutt.) Britton, Mem. Torr. Club, v, 196 (1894); Dalea 

 enneandra Nutt. Fraser's Cat. 1813. 



Among the foothills: Hot Springs, altitude 1,100 m., August 2 (No. 607). 



Parosela aurea (Pursh) Britton, Mem. Torr. Club, v, 196 (1894); Dalea aurea 

 Nutt. ; Pursh, Fl. ii, 740 (1814). 



Among the foothills: Hot Springs, altitude 1,1.50m., August"2 (No. 608). 



Amorpha canescens Pursh, Fl. ii, 467 (1814). 



Hills. 15 miles east of Custer, altitude 1,400 m., July 22; Hot Sjirings, altitude 

 1,100 m., August 2 (No. 609). 



Amorpha fruticosa L. Sp. PI. ii, 713 (1753). 



This was seen growing along French Creek and Fall River, but no specimens were 

 secured. 



Kuhnistera purpurea (Vent.) MacMillan, Metasp. Minn. Val. 329 (1892); Dalea 

 purpurea Vent. Hort. Cels. t. 40 (1800). 



Variable. Some of the siiecimeus are pubescent on the stem, but most of them are 

 glabrous and have short spikes with the calyx woolly, rather than silky. In the 

 Limestone District, altitude 1,900 m., July 27; Hot Springs, altitude 1,100 m., 

 August 2 (No. 610). Some of the specimens from the latter place have white flowers 

 (No. 611). 



Kuhnistera Candida occidentalis Rydberg, Contr. Nat. Herb, iii, 154 (1895). 



In the specimens of this collection the bracts are shorter than the calyx, in which 

 respect they ajjproach the variety multijlora. 



Hot Springs, altitude 1,100 m., August 2 (No. 612). 



Astragalus crassicarpus Nutt. Fraser's Cat. 1813. 



Nearly all my specimens from the Black Hills have large (16 to 20 mm. long), 

 ochroleucous flowers, purplish only at the tip ; but without doubt they all belong 

 to A. crasnicai-pua. Custer, altitude 1,650 m., May 31 to June 4 (No. 613). 



Astragalus sp. 



The specimens are witliout pods, hence can not well bo determined. The plant 

 may be a form of the preceding, which it resembles, though more upright, ascending ; 

 racemes elongated (1.5 dm. long), flowers distant on upright pedicels, bracts about 

 4 mm. long, calyx apiiiessed-hairy with dark hairs; corolla dark purple. Only one 

 plant found, that in full bloom on Battle Mountain, east of the Hot Springs, altitude 

 1,200 m., June 18 (No. 614). 



Astragalus platteusis Nutt.; Torr. & Gr. Fl. i, 332 (1838). 



Not uncommon in the southern part of the Black Hills. Hot Springs, altitude 

 1,100 m., June 13. August 3 (No. 615). 



Astragalus carolinianus L. Sp. PI. ii, 7.57 (18.53). 



Rochford. altitude 1.70f) m., July 12; French Creek, 15 miles below Custer, altitude 

 1,500 m., July 23 (No. 616). 



