2. Astragalus dasyglottis Fisch. ex DC. 



Low appressed-pubescent perennial with long rootstocks from a buried crown; 

 stems numerous, slender, decumbent to erect, 1-3 dm. tall; stipules linear to ovate, 

 usually basally connate; leaves 4-10 cm. long; leaflets 11 to 19, linear-lanceolate 

 to oblong-lanceolate, mostly retuse, 1-2 cm. long; racemes headlike, axillary, 7- 

 to 20-flowered, 1.5-2.5 cm. broad and not much longer (even in fruit); peduncles 

 shorter to longer than the leaves; flowers erect, about 17 (13-19) mm. long; 

 pedicels thick, scarcely 0.5 mm. long; calyx tubular-campanulate, about half the 

 length of the corolla, grayish- to blackish-strigose, the linear teeth somewhat shorter 

 than the tube; corolla usually purplish or the wings whitish, rarely more nearly 

 uniformly whitish and merely purplish-tinged; banner narrow, longer than the 

 slender wings which are about 4 mm. longer than the slightly acutish keel; pod 

 sessile, erect, about 1 cm. long, grayish- to blackish-hirsute, ovoid, cordate in cross 

 section, deeply sulcate, 2-celled by the complete intrusion of the lower suture. 

 A. goniatus Nutt. 



In wet meadows, grassy alpine slopes and river valleys and plains, in N. M. 

 (Rio Arriba, San Miguel and Union cos.), May-Aug.; Minn, to Yuk., s. to la., 

 Kan., N.M. and Calif.; e. Asia. 



14. Oxytropis DC. Crazy-weed. Purple Loco 



Perennial herbs, from a stout woody taproot and usually with a much- 

 branched crown; leaves basal or nearly so, odd-pinnate; flowers racemose, spicate 

 or somewhat congested, terminating a scapelike peduncle; calyx campanulate, with 

 subequal teeth; petals clawed; standard erect, ovate to oblong; wings oblong; keel 

 produced into a porrect beak; stamens 10, diadelphous; pods sessile or stipitate, 

 coriaceous or leathery, usually completely or incompletely 2-celled by the intrusion 

 of the upper suture. 



A genus of about 150 to 300 species of north-temperate regions. 



1. Leaves with verticillate leaflets 1. O. splendens. 



1. Leaves strictly pinnate, the leaflets paired or scattered but never verticillate 



(2) 



2(1). Racemes 10- or more-flowered, usually elongating in fruit 



2. O. Lambertii. 



2. Racemes 1- to 5-flowered, subcapitate in anthesis and not becoming much- 



elongated in fruit (3) 



3(2). Leaflets 5 to 11; pods about 1 cm. long, inflated, ovoid, densely white- 

 villous 3. O. oreophila. 



3. Leaflets 13 to 21; pod 1.5-2.3 cm. long, not inflated but coriaceous, cylindric 



to oblong, black-hairy 4. O. Parryi. 



1. Oxytropis splendens Dougl. ex Hook. 



A nearly or quite acaulescent densely silky perennial with a branched caudex; 

 leaves 10-25 cm. long; stipules membranous, 10-15 mm. long, adnate to the 

 petiole for V2, of their length and tubular-connate; leaflets mostly in verticils of 3 to 

 6, lanceolate to elliptic, 5-20 mm. long; peduncles usually slightly exceeding the 

 leaves; racemes spikelike, densely 20- to 80-flowered, usually 5-10 cm. long but 

 sometimes more elongate (especially in fruit); flowers reddish-purple, 12-15 

 mm. long; calyx one half to two thirds as long as the corolla, the obtuse linear- 

 lanceolate lobes one third to one fourth the length of the tube; beak of the keel 

 straight to slightly curved, slender, to 1 mm. long; pod 10-15 mm. long, 3-4 mm. 

 long, 3-4 mm. broad, cordate in cross section because of the intrusion of the 

 upper suture, narrowed to a distinct beak about 3 mm. long. 



Gravel bars and wet meadows, N. M. {Hitchcock et al.), June-Aug.; Ont. to 

 Alas., s. to Minn, and N. M. 



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