1 'JO 



Peduncles slender, strict, about 1 dm. long, a little longer than leaves. 

 Lea\ek about 1 dm. long, the upper nearly sessile, with 10-12 pairs of 

 elliptical-ovate leaflets which are about 1 cm. long, obtusish, fiat, 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 -Vjusco Morales Mexico, May 26 1898, Middle Temperate life 

 zone, Pringle's \o. 6861, Xat. Herb. 462653. It was also got by .\'el- 

 son in the valley of Daxaca Sept. 20 1894 No. 1427 in the Lower Tem- 

 perate life zone. This form has peduncles 2-3 dm. Ion;;. 15 pairs of 

 leaflets, stipules 1 cm. long, flowers short-spicate. Other localities by 

 Rose are Tres Marias Morales Julv 4 1901 No. 395071, and E\ Parquc 

 Morales Sept. 21 1903 Xo. 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 caly.K 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 

 campanulatc, 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 uneciual 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 4-10 mm. long. Pe- 

 duncles mostly shorter than the leaves, stout for the plant, sulcate, as 

 thick as the stems. Leaves 4-6 cm. long, vtry short-petioled, lax. The 

 Leaflets 8-15 pairs, oval to oblong-elliptical, 4-7 mm. long, smooih 

 above, inclined to be broader below and with cuneate base, .'^tipules 

 conspicuous, hyaline, the upper the largest, lanceolate, about 7 inn.. 

 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 3 mm. high and 4 min. 

 wide, closely reflexed, convex along both sutures, specially ;it tip and 

 base, obtuse at both ends, but strongly apiculate at tip. so»;iewhat in- 

 flated, oblong, the ventral side rather triquetrous, the dorsal flattened 

 a little and very broadly sulcate along the middle making the cross- 

 section tricjuetrous-reniform, the septum little intruded as a very thin 

 partition, hlowers 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 obliciuely 

 ovate and about 3 mm. high and erect or arched to a 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 low^er corner, nigrescent with very short and close-pressed 

 hairs. Teeth subulate from a dtltoid base, about half as long as tube. 

 Bracts Un-eolate, hyaline, 4-5 mm. long. Pedicels almost none. Pe- 

 duncles slender, 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-petiolulaie leaflets which are nearly smooth. 

 Stipules about 5 mm. long, triangular, free above. This has ths habit 

 and general appearance of A. Brandegei, but the pods have the general 

 shape and look of the Guatamalensis group, though they are nearly 



