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 em. long, nigrescent, papery and a little inflated, 
nearly straight. Flowers white with purple tips, and like the pods 
closely refiexed 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 arched 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, neariy 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. Internodes 2-5 cm. long. Salto de Aqua 
Mexico, state of Mexico, No. 1751 Purpus. A plant from near Cima 
state of Mexico by J. N. Rose, Sept. 19, 1903, is a less developed 
form with smaller and shorter leaves. 
259. Astragalus vaccarum Gray Pl. Wr. 2 43 (1853). A. 
Dalex 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 cm. long, ax- 
illary. Leaves 3-8 em. 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, | ngo, and Hidalgo 
Mexico. Blooming in sus Forms that are similar but with — 
bevaucr pods more ike A. ¿wegi from the stare of Mexico fora 
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