144 LEGUMINOS^- astragalus. 



pods falcate, somewhat reflexed, linear, compressed, somewhat diaphanous; 

 nearly glabrous, 2-celled, many-seeded. Bandy soil, near the Great Falls 

 of the Oregon (Douglas). 



A. accidens Watson I.e. Sparingly pubescent ; the numerous stems 

 6-18 ini-hes long, ftom a thick perennial root: leaflets i0-15 paii-s, oblong,, 

 retusc, cuneate at base, glabrous above, appressed pubescent beneath, 

 0-8 lines long : peduncles about equalling the leaves: flowers reflexed, in 

 a short raceme; calyx campanulate, dark-pubescent. 3 lines long, the 

 teeth nearly equalling the tube: corolla yellowish, the narrow erect ban- 

 ner 6-7 lines long. Pod white-pubescent, on a stipe as long as the calyx, 

 oblong-ovate, subsulcate on the back, the ventral suture somewhat promi- 

 nent, straight, reflexed, 4-5 lines long. On open hillsides, southwestern 

 Oregon. 



.1. Vaciflcus Sheld. Bull. Minn. Nat. Hist. Surv. 9, 174. A. Hender- 

 xoiii Watson, nut Baker. Thinly pubescent throughout with soft woolly 

 hairs, the numerous stems erect or ascending from a stout perennial root- 

 stock, 1-2 feet high: leaflets 6-10 pairs, narrowly oblong, obtuse or 

 retu.i'e, 6-9 lines long ; stipules lanceolate : pedunculate racemes e.-cceeding 

 the leaves', few-flowered : calyx tubular-campanulate, dark-villous, o-4 

 lines long, the narrow teeth nearly equalling the tube : pods reflexed, 2- 

 celled, very fleshy-coriaceous, upon a stipe twice longer than the calyx, 

 turgid, oblong to oblong-obovate, with a stout prominent ventral suture, 

 the dorsal less prominent, very abruptly mucronate, glabrous, rugose, 

 8-11 lines lopg by 4 thick. Open hillsides, Jackson Co.,. Oregon and ad- 

 jacent California. 



S - Ch^etodoxtes Gray 1. v. 194. Pods ovate, small, se.ssile, 

 coriaceous, turgid or at times subcompressed, more or less sulcate 

 on the back, "i-celled by the intrusion of the dorsal suture, cells 

 ;^-4-ovu]ed. -Many-stemmed perennials. 



X, Spaldingii Gray 1. c. 524. Villous-pubescent : stems a foot in height: 

 leaflets 21-25, lanceolate to oblong-linear, 3-6 lines long : peduncles ex- 

 ceeding the leaves : spikes oblong, dense, or rather loose at base; flowers 

 nearly 5 lines long : bracts setaceous ; calyx very villous; pods 2-3 lines 

 long, villous scarcely sulcate, 2-4-seeded. Plains of eastern Washington 

 and Idaho. 



A.^ Lyallii Gray 1. c. 195. White-silky : stems a foot high, leaflets 

 19-25, 3-6 lines long, lajiceolate to oblong-linear: peduncles not exceeding 

 the leaves; spikes long and loose ; calyx villous, the tube equalling the. 

 teeth : pods hoary, sulcate. Valley of the Yakima, AVash., near the Brit. 

 Columbia boundary. 



§ 8. Ulioinosi Gray 1. c. 196. Pod coriaceous, turgid, ob- 

 lonji-, torete, scarcely sulcate and only on the back, nearly 

 straight, sessile, septum perfect. Tall perennials with appressed 

 gray-pubescence or glabrate. 



-4.. Mortoiii Nutt. .Tourn. Acad. Philad. vii, 19. Minutelv appressed- 

 pubescent, greenish : stems erect 18-24 inches high: stipules broad and 

 memliranaceous; leaflets 11-17, oblong, obtuse, 6-12 lines long: peduncles 

 as long as the leaves; ilowers sessile or nearlv so, in dense .racemose 

 spikes, reflexed as they open, the fruit erect ; calyx villous, its teeth triang- 

 ular-lanceolate, shorter than the tube : pods 6 Imes long, minutely pubes-' 

 cent, elongated-oblong, grooved at the dorsal suture, the ventral suture 

 externally prominent : seeds numerous. Drv plains, eastern Oregon and 

 Washington to Montana, Utah and Nevada. 



§ 4. O.voBRYCHiDKrt Gray 1. c. 19ii. Pods coriaceous oblong 



