494 



CC'i)liinil»ia). In the Gray ITerbariniii tliero is a poor specimen of the original 

 (>. rincida of Nuttall, and this resembles more my plant, which Dr. Gray Avonld have 

 inclnded in O. monticola (Jenney's plants from the Ulack Hills are included in the 

 latter), rather than in 0. visrida as understood by him. 



Common around Custer, altitude 1,650 to 1,700 ni., June 5 (Xo. 636). 



Spiesia lambertii (Pursh) Kuntze, Kev. Gen. PI. i, 207 (1891); Oiytropis latnbei-tii 

 Pursh. n. ii, 710(1814). 



Hot Springs, altitude 1,1(¥) ni.. .Tune 18; Kochford, altitude 1,700 m., July 11 

 (No. ti:{8t. 



Spiesia lambertii sericea(Nutt.) Kydberg. Hot. Snrv. Xebr. iii, 32(1894) ; Oxytropis 

 sericea Xutt. ; Torr. & Gr. Fl. i, 339 (1838). 



All my specimens have yellow llowers. In a few the calyx is somewhat viscid, and 

 these can scarcely be distinguished from the preceding species except by the size. 

 The bracts arc narrower than in the blue-llowercd forms I have seen. 



Hot Springs, altitude 1,100 m., June KJ (Xo. ()37). 



GlycyiThiza lepidota Pursh, Fl. ii, 480 (1814). 



On tll<^ French Creek, 15 miles below Custer, altitude 1,400, July 22 (No. 639). 



Hedysaruni americauum Hritton, Mem. Torr. Club, v, 201 (1894); Hedysantiu 

 (ilphiiim americanum Mx. Fl. ii, 74 (1803); H. boreale Xutt. (ien. ii, 110 (1818). 



In Coulter's Manual the stamens are given as diadelphous (.5 and 1), in Gray's 

 Manual as di.idelphous (9 and 1) in the key, but as 5 and 1 in the description of the 

 genus. In all dowers investigated, they were 9 and 1, but the united stamens were 

 of two different lengths, every second one being shorter. 



Hills: Kochford, altitude 1,700 m., July 12 (No. &10). 



Vicia americana Muhl.; Willd. Sp. PI. iii, 1096 (1801). 



Common: Little 121k Canyon, altitude 1,100 m., June 28; Elk Canyon, altitude 

 1,200 m., June 29; Lead City, altitude 1,600 m., July 6 (Xo. 641). 



Vicia americana linearis (Nutt.) Wats. Proc. Amer. Acad, xi, 134 (1876); Lathyrns 

 InuariH Nntt. : Torr. A: Gr. Fl. i, 276 (1838). 



\'. americana ami this plant grow together sparsely everywhere in Xebraska. I 

 have not seen any intermediate forms, but they both grade into tiie variety Iriinvalo. 

 Hot Springs, altitude 1,050 m., June 16 (Xo. 643). 



Vicia americana truncata (Nutt.) Brewer, Bot. Cal. i, 158 (1856); nVifl inincata 

 Xutt.; Torr. & (ir. Fl. i, 270 (1838). 



Always near water, where V. americana and F. linearis are found on the drier land. 



Hot S])ring8, altitude 1,0.50 m., June 13 (Xo. 642). 



Lathyrns ochroleucus Hook. Fl. Bor. Amer. i., 1.59 (1833). 



CoiiuMon and very luxurious in the Black Hills. It is regarded as a very good 

 fofbbr jdaut, and may be of economic value. 



b'apid Creek, altitude 1,000 m., .June 25; Elk Canyon, altitude 1,200 m., June 29 

 (No. 644). 



ROSACEiE. 



Prunns americana Mnrsh. Arl>. Aiiur. HI (1785). 



Draws among the foothills: Minuekahta, altitude 1,275 m., August 4 (No. 645). 



Prunus besseyi Bailey, Bull. Cornell Agr. Exp. Sta. 70, 261 (1894). 



In tlic lootliills: Ilermosa, altitude 1,0.50 m., .Iune23; Minuekahta, altitude 1,300m., 

 August I ( No. till".). 



Prtinns pemisylvanica L. f. Su])]>l. 2.52 (1781). 



In the Black Hills it never becomes a large tree. The largest specimens I saw 

 were less than 7 m. high. On the hills around Lead City, it is only a small shrub, 

 n«)t much taller than the jireccding, and has generally folded leaves. 



Woods : Custer, altitude 1,700 to 1,800 m. ; Lead City, altitude 1,700 m., J uly 3 and 6 

 (Xo. 647). 



