152 LEGUMINOS^E. Astragalus. 



oblong or cylindrical spike : calyx-teeth subulate-setaceous, nearly the length of the 

 campanulate whitish-villous tube, much shorter than the curved yellowish-white 

 corolla ; this half an inch long, and the broad claws shorter than the blades : pods 

 pendulous, linear-oblong, falcate or sickle-shaped, half to three fourths of an inch 

 long, 2 lines wide, abruptly pointed, soft-downy, 10 - 20-seeded. Proc. Am. Acad. 

 vi. 524. 



Eastern ranges of the Sierra Nevada, Sierra Co. to Washoe Co., Nevada, Anderson, Torrey, 

 Lemmon, &c. 



3. Pod neither membranaceous and bladdery-inflated, nor long-hairy or woolly, 



* Conspicuously stipitate in the calyx (stipe equalling or much exceeding the latter). 



-t- One-celled pod with both sutures prominent externally and not within, narrow. 



++ Calyx very obliquely attached to the pedicel and soon recurved on it : corolla, yel- 

 lowish-white : pod curved, cartilaginous or rigid, not compressed, the cross section 

 obovate : stems a foot or two long, mostly spreading or decumbent : stipules small, 

 distinct. 



28. A. cyrtoides, Gray. Soft-pubescent throughout and mostly hoary, rather 

 stout: leaflets 11 to 21, from obovate-oblong and retuse to obcordate, becoming 

 smoother above : peduncles exceeding the leaves : flowers numerous in a dense 

 spike-like raceme : calyx downy ; the teeth not half the length of the oblong-cam- 

 panulate tube : pod oblong-linear, pubescent, an inch or more in length, on an 

 ascending slender stipe of half an inch or more, either falcate or at length curved 

 into a ring ; the thick cartilaginous valves very turgid at maturity, obscurely retic- 

 ulated. Proc. Am. Acad. vi. 201 & 525 ; Watson, Bot. King Exp. 75. 



Eastern side of the Sierra Nevada, Placer to Sierra Co. and eastward (Anderson, Lemmon}, 

 and W. Idaho, Spalding. Corolla half an inch long. 



29. A. speirocarpus, Gray. Minutely cinereous-pubescent : stems rather 

 slender : leaflets 9 to 17, obovate and oblong, emarginate : flowers less numerous 

 and crowded than in the preceding : calyx barely puberulent ; the teeth not a 

 quarter of the length of the cylindraceous tube : pod glabrous, tapering at base 

 into a stipe only twice the length of the calyx, coiled nearly into one turn or at 

 length into a flat spiral ; the valves thinner and less indurated than in the preced- 

 ing, more veiny, and less turgid. Proc. Am. Acad. vi. 225 ; Watson, 1. c. 



Var. falciformis, Gray. Stipe filiform, half to three fourths of an inch long, 

 nearly the length of the thinner-walled and less turgid falcate or merely hooked pod. 



Sierra Co. (Lemmon) and adjacent mountains of Nevada ( Watson) ; the original collected by 

 Lyall on the Upper Columbia, in fruit only. Flowers narrower and rather longer than in the fore- 

 going, which some forms approach. 



+4- ++ Calyx equal-sided and centrally attached to the pedicel : pod straight, linear- 

 oblong, compressed ; the valves thin and parchment- like : stems erect or someivhat 

 spreading. 



30. A. filipes, Torr. Minutely puberulent or glabrous : stems slender, branch- 

 ing, 2 feet high: stipules small and subulate : leaflets 9 to 17, rather scattered, 

 linear (one third to two thirds of an inch long) : racemes virgate, long-peduncled, 

 loosely-flowered : pedicels soon spreading or pendulous : calyx-teeth not half the 

 length of the campanulate tube : corolla yellowish-white (half an inch long) : pod 

 an inch or less in length and 2 or 3 lines broad, abruptly contracted at base into a 

 filiform stipe of about half an inch in length. Gray, Proc. Am. Acad. vi. 226. 



N. W. Nevada ( Watson, Lemmo-n), extending towards and probably within the State, and in 

 the dry interior country to Washington Territoiy. 



31. A. Antiselli, Gray. Cinereous-pubescent, a foot or so in height : leaflets 

 21 to 29, linear-oblong, crowded, 2 to 4 lines long, hoary beneath but glabrous 



