190 
Peduncles slender, strict, about 1 dm. long, a little longer than leaves. 
Leaves about 1 dm. long, the upper nearly sessile, with 10-12 pairs of 
elliptical-ovate leaflets which are about 1 cm. long, obtusish, flat, not 
contiguous, smooth or rarely ashy. Stems 3-5 ft. long, prostrate or 
ascending, with slender internodes 3-5 cm. long, (shorter in smaller 
plants). flexuous. Stipules hyaline and conspicuously connate. Sier- 
ra de Ajusco Morales Mexico, May 26 1898, Middle Temperate life 
zone, Pringle's No. 6861, Nat. Herb. 462653. It was also got by Nel- 
son in the valley of Oaxaca Sept. 20 1894 No. 1427 in the Lower Tem- 
perate life zone. This form has peduncles 2-3 dm. long, 15 pairs of 
leaflets, stipules 1 cm. long, flowers short-spicate. Other localities by 
Rose are Tres Marias Morales July 4 1901 No. 395071, and El Parque 
Morales Sept. 41 1903 No. 450817. 
149 Astragalus Tolucanus Rob & Seat. Proc. Am. Acad. 28 104 
(1893). Pods about 1 cm. long, rounded at both ends, oblong-oval. 
little if at all sulcate, on a tapering stipe about as long as calyx, appar- 
ently membranous, probably pendent on the reflexed stipe and spieate, 
with septum a little intruded. Flowers about 20, ascending. Banner 
ovate to oblong, about 7 mm.long, gently arched to erect from the 
end of calyx tube, about 2 mm. longer than wings and 5 mm. longer 
than keel. Wings about 1-2 mm. wide. narrowly oblong, ascending 
concealing keel. Keel with straight base, barely 3 mm. long, thick, 
the tip abruptly erect and almost square and 2 mm. high. Calyx tube 
campanulate, about 4 mm. long and 3 mm. high, nearly truncate at base 
and a little unequally attached, hyaline and speckled with minute and 
black hairs, cleft deeper above and with teeth unequal but broadly tri- 
angular and nearly as long as tube. Pedicels slender, 2-3 mm. long. 
much shorter than the rather stalked. ovate, foliose bracts which often 
equal the calyx but are rather hyaline below and 4-IO .mm. long. Pe- 
duncles mostly shorter than the leaves, stout for the plant, sulcate, as 
thick as the stems. Leaves 4-6 cm. long, very short-petioled, lax. The 
Leaflets 8-15 pairs, oval to oblong-elliptical, 4-7 mm. long, smooth 
above, inclined to be broader below and with cuneate base. Stipules 
conspicuous, hyaline, the upper the largest, lanceolate, about 7 mm. 
long. Stems weak and filiform, very many, from a thick crown, hard- 
ly 2 dm. long, branched, nearly prostrate. Internodes about 2 cm. 
long. Whole plant nearly smooth except the nigrescent calyx and 
bracts. This is a delicate and low plant related to A. Guatamalensis. 
Middle Temperate life zone, growing among pines on mountain sides 
in the Nevada de Toluca state of Mexico. The broad calyx lobes and 
bracts are peculiar. 
150 Astragalus Rosei N. Sp. Pods about 3mm. high and 4 mm. 
wide, closely reflexed, convex along both sutures, specially at tip and 
base, obtuse at both ends, but strongly apiculate at tip, somewhat in- 
flated, oblong, the ventral side rather triquetrous, the dorsal flattened 
a little and very broadly sulcate along the middle making the cross- 
section triquetrous-reniform, the septum little intruded as a very thin 
partition. Flowers stubby, purplish. Banner very broad and much 
recurved, not over 4 mm. long, often surpassed by the wings which are 
narrowly-oblong and somewhat longer than the keel. Keel obliquely 
ovate and about 3 mm. high and erect or arched toa half circle, obtuse, 
conspicuous. Calyx campanulate, the tube 3 mm. long, cleft deeper 
_ above, with the lower side straight and the upper arched and inserted 
near the lower cerner, nigrescent with very short and close-pressed 
hairs. Teeth subulate from a deltoid base, about half as long as tube. 
— Bracts lanceolate, hyaline, 4-5 mm. long. Pedicels almost rone. Pe- 
duncles siender, 6-10 cm. long, in the upper axils, the floral rachis 3-5 
cm. long. Stems flexuous, a foot or so long, probably perennial. The 
leaves about 1.dm. long. nearly sessile, with about 10 pairs of oblong, 
rounded and rather long-petiolulate leaflets which are nearly smooth. 
Stipules about 5 mm. long, triangular, free above. This has ths habit - 
| . and general appearance ofA. Brandegei, but the pods have the general 
_ shape and look of the Guatamalensis group, though they are nearly | 
CES 
d s 
