450 PROCEEDINGS OP THE AMERICAN ACADEMY 



Astragalus diurnus. Of the Injlati section ; apparently peren- 

 nial, many-branched from the base, the ascending stems (6 inches high) 

 slender, somewhat appressed-pubescent : leaves (1 or 2 inches long) of 

 about 5 pairs of obovate, obtuse, or retuse leaflets, glabrous above, 

 pubescent beneath, 1 to 3 lines long : peduncles shorter than the leaves, 

 slender, few-flowered ; flowers spreading or reflexed, pale yellow or 

 lined with purple, 3 lines long ; calyx turbinate-campauulate, the 

 slender teeth as long as the tube: pod inflated, 1 -celled, membranous, 

 sessile, obliquely oblong-ovate, the ventral edge nearly straight, some- 

 what compressed, finely pubescent, about 8 lines long. — Most nearly 

 related to A. subcinereus and A. Wardil. Collected at Dayville, on 

 John Day River, Oregon, by Thomas Howell, May, 1885. 



Astragalus (Scttocarpi) quinqueflorus. Annual, prostrate, 

 many-branched at base, the very slender stems (6 inches long or less) 

 canescent with short appressed straight pubescence : leaves elongated ; 

 leaflets 3 to 5 pairs, linear to linear-oblong, obtuse, 2 to 6 lines long : 

 peduncles elongated; raceme short, loosely few- (usually 5-) flowered: 

 flowers white or purplish, 2| lines long; calyx turbinate, the subulate 

 teeth as long as the tube : pod chartaceous, 1-celled, sessile, oblong, 

 turgid, somewhat compressed and the sutures nearly flat, pubescent, 

 5 lines long. — On the hills and plains near Chihuahua ; C. G. Pringle, 

 April, 1885 (n. 234). 



Lathyrus Nuttallii. Stout and tall, more or less pubescent 

 throughout with loose woolly hairs : stipules semi-sagittate, rather 

 narrow ; leaflets 3 to 6 pairs, variable, narrowly or broadly elliptical, 

 usually acute or acutish at both ends, apiculate, 1 or 2 inches long ; 

 rhachis tendril-bearing : peduncle shorter than the leaves, few-flow- 

 ered : calyx-teeth triangular, acuminate, the lower somewhat larger ; 

 petals reddish purple, 6 to 8 lines long : pod glabrous, oblong, attenu- 

 ate to a very short thick stipe, 1 to 1| inches long by 4 lines wide: 

 seeds globose, brown. — Fii'st collected by Nuttall in " Upper Cali- 

 fornia," and f I'equently since by various collectors, from British Colum- 

 bia (Telegraph Trail, lat. 54°, J. Macoun, and Vancouver Island, C. 

 H. Wood) to Oregon and western Idaho (Clear Water, Spalding). It 

 has been usually referred to the eastern L. venosus, which is not found 

 west of the Rocky Mountains. 



C^SALPiNiA SKSSiLiFOLiA. Shrubby, 4 to 6 feet high, glabrous 

 throughout, the younger branches green and somewhat glaucous, with 

 a pair of straight or recurved prickles at or below the nodes : leaves 

 of a single pair of pinnae, closely sessile, with a pair of stipular 

 prickles ; secondary petioles about an inch long, with stipellar 



