372 



LEGUMINOSAE 



^vp!i{^ ' 



^ 



shorter than the leaves; racemes h)osely 3 to 6-tlo\vercd, ^^ inch lonjr; flowers 4 

 lines lonp:; calyx-teeth subulate, more than half as lonj? as the campanulate tube; 

 corolla yellowish; pods rather strictly erect, linear, straight, subcylindric, coria- 

 ceous, lifrhtly strip:ose-pubescent, 6 to 9 lines lonp:, incompletely 2-celled, the dorsal 

 suture intruded; seeds (> to 8. 



Desert valleys, 4000 to 5500 feet : Lassen Co. ; Modoc Co. East to Nevada, north 

 to Oregon and Idaho. June (fl. and fr.). 



Lock. — DLxcy Mts., Lassen Co., Baker rf- Nuttinp. Nov.: Reno, Kennedy. Ore.: Malheur 

 City, Baker Co., Cusick 2368. The followiinf plants arc law and tufted (4 to 5 inches high) ; 

 lealiets fewer and reduced (2 to 3 lines long) ; peduncles mostly subscaposc, 1 to 4% inches 



long, little exceeding the leaves: Ewing Creek, ne. 



Modoc Co., R. M. Austin; Goose Lake, Modoc Co., 



R. M. Austin. 



Refs. — Astragalus obscurus Wats. Bot. King 



69 (1871), type loc. Truckee Pass, Virginia Mts., 



Nev., Watson 266; Jepson, Man. 574 (192.5). Traga- 



cantha ohscura Ktze. Eev. Gen. PI. 2:946 (1891). 



Tium ohscurum Rydb. Fl. Rocky Mts. 498 (1917). 



52. A, clevelandii Greene. Canon Loco. 

 Stems stoutisli, erect, branching, 1 to 2^/2 feet 

 hig-h; herbage puberulent, becoming glabrate; 

 leaves 2 to 3 inches long; leaflets 15 to 23, nar- 

 rowly oblong to lanceolate, 214 to 7 lines long; 

 racemes narrow, 3 to 6 inches long, 5 lines 

 wide, on peduncles longer than the leaves; 

 flowers 2 to 2I/2 lines long; calyx-teeth subu- 

 late, about equaling the tube; corolla white or 

 cream-color, hardly over 2 lines long; pods 

 curved, ovate-lanceolate, strongly grooved on 

 the back, reticulate, glabrous, incompletely 2- 

 celled, 2 to 2I/2 lines long, on recurved ped- 

 icels. 



Mountain valleys and caiions, 1500 to 3000 

 feet: northern Napa Co. and eastern Lake 

 Co. July, fr. Aug. 



Locs. — Mt. St. Helena (n. side), Greene; Butts Canon, n. Napa Co., Jepson 13,743; Knox- 

 ville, ne. Napa Co., Jepson; Mt. Hannah, Lake Co., Tracy 2248. 



Refs.— Astragalus clevelandh Greene, Bull. Torr. Club 9:121 (1882), type loc. Indian 

 Valtey, Lake Co., Cleveland; Jepson, Fl. W. Mid. Cal. 292 (1901), ed. 2, 236 (1911), Man. 576, 

 fig. 566 (1925). Hamosa clevelandii Rydb. Bull. Torr. Club 54:334 (1927). 



53. A. lemmonii Gray. Stems slender, several to many from the root-crown, 

 1/2 to 2 feet long, soon procumbent; herbage strigulose; leaves % to 1^4 inches long; 

 leaflets 9 to 13, linear to linear-oblong, 3 to 5 lines long; peduncles filiform, shorter 

 than the leaves; flowers 1^2 to 2 lines long, few to many, crowded in capitate ra- 

 cemes; calyx-teeth setaceous-subulate, equaling or longer than the short-campanu- 

 late tube; corolla whitish, tinged with purple; pods puberulent, ovate-oblong, acute, 

 thickened, grooved dorsally, incompletely 2-celled, 2 to 2% lines long; seeds few. 



Valley flats, 5000 to 6700 feet : east side of the Sierra Nevada crest from Mono 

 Co. to Sierra Co. North to eastern Oregon. June (fl. and fr.) . 



Locs. — Hilton Creek, Owens River, Peirson 10,744; Sierra Valley. 



R€fs.— Astragalus lemmonu Gray, Proc. Am. Acad. 8:626 (1873), type loc. Sierra Valley, 

 Lemmon; Jepson, Man. 575 (1925). Tragacantha lemmonii Ktze. Rev. Gen. PI. 2:946 (1891). 



54. A. lentiformis Gray. Lentil Loco. Stems tufted on the branched root- 

 crown, 3 to 5 inches long; herbage canescent; leaves 7 to 12 lines long, the petioles 

 nearly equaling the blades; leaflets discrete or a little crowded, linear to oblong or 

 obovate, % to 21/2 lines long; racemes 6 lines long, few-flowered; flowers 214 lines 



Fig. 213. Astragalus obscurus Wats. 

 a, habit, X % ; &, fl., X 2 ; c, pod, X 1 ; 

 d, cross sect, of pod, X 3. 



