279 Micranthi. 



very obtuse. Bracts triangular, about equaling the calyx tube and 

 much longer than the 1 mm. -long pedicels. Calyx Hedeoma-like, 

 about 1.5 mm. long, laterally flattened, broadly campanulate, very 

 oblique at both ends, inserted a little below the middle of the end, 

 sparsely long-hairy with appressed hairs, teeth triangular-subulate, 

 lax, about as long as tube. Peduncles filiform, 5-10 cm. long, lax, 

 axillary. Spikes 2-5 cm. long, becoming a little loose in fruit, 

 never very dense. Leaves 5-7 cm. long, mostly all petioled. Leaf- 

 lets 6-8 pairs, narrowly elliptical, nearly 1 cm. long, long-petiolulate 

 and cuneate at base, distant, obtuse. Stipules triangular to subu- 

 late, hyaline below, 3-5 mm. long, not connate. Stems very slender 

 and flexuous, nearly erect from a woody base, about a foot high, in- 

 ternodes rarely 2 cm. long. Soldier Canon near Colonia Juarez Chi- 

 huahua Mexico, Sept. 16, 1903, Jones. Lower Temperate life zone. I 

 also refer to this Pringle's No. 1586 from Carretas Chihuahua Mexico 

 which was distributed as A. Hartwegi and was considered by Wat- 

 son to be A. parvus. Palmer's No. 441 from Durango Mexico with 

 white flowers is the same. 



258. Astragalus Saltonis n. sp. Pods as in A. Hartwegi but 

 barely sulcate dorsally and not at all ventrally, with deltoid cross 

 section, about 1.5 cm. long, nigrescent, papery and a little inflated, 

 nearly straight. Flowers white with purple tips, and like the pods 

 closely reflexed and densely clustered. Banner oval, arched to 

 nearly a half circle at calyx tips, with sides closely reflexed fully 

 1 mm. wide above, about 4 mm. long. Wings oblong, arched, white, 

 fully as long as banner or longer. Keel arcned from base to tip in 

 about one-third circle, and upper side about straight from base to 

 tip, obtuse, about 3 mm. long and as long as or 1 mm. shorter than 

 banner, conspicuous. Calyx tube narrowly campanulate, a little nar- 

 rowed below and obtuse but about equally inserted, very oblique 

 above, very nigrescent with fine soft rather spreading short hairs, 

 teeth subulate nearly as long as tube and lax. Pedicels 1 mm. long. 

 Bracts lanceolate, the lower 5-7 mm. long, lax and hyaline, hairy as 

 in all the allied species. Peduncles stout, about 1 dm. long, sub- 

 terminal. Leaves 5-10 cm. long, widely spreading and lax, the 

 upper about sessile. Leaflets nearly linear to narrowly oblong, 

 cuneate and long-petiolulate below, obtuse, 1 cm. long, nearly 15 

 pairs, softly silky-pubescent below with very fine and spreading 

 hairs and rough surface, the upper side smooth. Stipules connate 

 and large, often 1 cm. long. Stems decumbent, flexuous, not slen- 

 der, about a foot long. Liternodes 2-5 cm. long. Salto de Aqua 

 Mexico, stcite of Mexico, No. 1751 Purpus. A plant from near Cima 

 state of Mexico by J. N. Rose, Sept. 19, 1903, is a le-3S developed 

 form with smaller and shorter leaves. 



259. Astragalus vaccarum Gray PI. Wr. 2 43 (1853). A. 

 Daleae Greene. Pods softly pubescent, broadly sulcate to the mid- 

 dle, with reniform cross section. Flowers greenish-white (sometimes 

 purple), very short and stubby. Banner about round, 2 mm. long, 

 abruptly arched to more than erect, about as long as the obovate 

 and rounded wings which a little surpass the keel. Keel with whole 

 blade erect, half-oval-ovate, about 2 mm. high, obtusish. Calyx 

 tube rather narrowly campanulate, hardly 1 mm. long, oblique at 

 tip, teeth triangular, nearly as long as tube which is appressed and 

 scantily hairy with long hairs. Bracts fully as long as calyx, lan- 

 ceolate. Pedicels almost none. Peduncles filiform 5-15 cni. long, ax- 

 illary. Leaves 3-8 cm. long, lax, the upper sessile. Leaflets 6-10 

 pairs, narrowly elliptical, cuneate and long-petiolulate below, obtuse, 

 5-15 mm. long, distant. Stipules triangular to subulate, not connate, 

 often 5-8 mm. long. Stems rather slender, nearly erect, a foot or 

 two high, branched below. Central New Mexico to the Huachuca 

 Mts. Arizona and southward to Sinaloa, Durango, and Hidalgo 

 Mexico. Blooming in July. Forms that are similar but with 

 i(i:o<a^<.i poda n:.oi-c like A. Ilariwcj^i froiu the otava ox .AltXiCO foiiu 



