Nelson Genus Hedysarum in Rocky Mountains. 185 



accord with the original description. It seems highly probable that no 

 true H. Mackenzii occurs within the United States, at least no specimens 

 have come under my observation with leaves that are "canescently 

 hairy on both sides," or "utrinque eanescenti-pilosis, " and with the 

 joints of the legume "rugose and pilose." The original specimens 

 from "Barren grounds, north of Lat. 04, as far as the shores of the Arc 

 tic Sea" must have been very different. The Rocky Mountain plant may 

 be named as follows: 



Hedysarum pabulare n. sp. 



Stems several from the crown of a woody root, decumbent at base 

 and moderately slender, 4-7 dm. long, subcinereous and obscurely striate: 

 leaves petioled. 5-10 cm. long; leaflets 9-15, from narrowly to broadly 

 oblong or rarely on some of the lower leaves obovate and emarginate, 

 1-2 cm. long, subcinereous with a minute pubescence below, green, glab- 

 rate and minutely puncticulose above; stipules rather small, more or 

 less united, with linear acuminations as long as the body; racemes long, 

 on axillary peduncles surpassing the leaves, its flowers tardily or not at 

 all reflexed; calyx-tube short (about 2 mm.), its4eeth linear-acuminate 

 and 3-4 mm. long; corolla lilac or light purple; its standard 12-13 mm. 

 long, broadly obovate, emarginate; the keel obovate-cuneate, equaling 

 the standard and about one-fourth longer than the narrowly oblong 

 wings; joints of the loment, 3-5, suborbicular, 5-7 mm. broad, usually 

 closely united or confluent, more rarely with a narrow canescent con 

 nective, the transverse nerves (scarcely reticulate) ending in a thickened 

 margin, light green and appearing glabrous, but sparsely puberulent 

 under a lens. 



This species is reputed an excellent forage plant. As previously stated 

 it has often figured as H. Mackenzii. The following collections seem to 

 me* to be representative of it. Wyoming: 752, Wind River, 1894; 1087, 

 Snake River, 1894; 201, Bates Creek, 1901, by L. N. Goodding. Colorado: 

 Durango, 1898, by C. S. Crandall; 83, Mancos, 1898. by Baker, Earle and 

 Tracy. Utah: 5592, Soldier Summit, 1894, by M. K. Jones. 



Hedysarum philoscia n. sp. 



Bright green and nearly glabrous throughout; stems slender, 4-7 dm. 

 high, few to several from a freely branched semi-fleshy root; leaves 

 crowded, short petioled, with lanceolate membranous semiconnate stip 

 ules: leaflets 15-23, mostly oblong (15-30 mm. long and 7-12 mm. broad), 

 obtuse with a minute mucro, some minute straggling hairs below, especial 

 ly on the midrib: peduncles axillary, slender, overtopping the leaves; 

 race me slender, puberulent, acuminate; flowers white, sharply reflexed in 

 bud, rising somewhat in anthesis; bracts filiform; calyx-tube campanulate, 

 with triangular-lanceolate teeth shorter than the tube; corolla narrow, 



