Irifle arched, about 1 mm. wide and 1 mm. longer than keel. The keel 

 .straight, about 4 mm. long, then abruptly erect, triangular and acutish 

 and about 3 mm. high. Calyx tube about hemispherical, 3 mm. long 

 an('. svide, appearing inflated, rounded at the fleshy base and about e- 

 qiuiliy inserted, cleft deeper above but barely oblique above, the sinus- 

 es \€ry l)road, and the subulate teeth about 2-3 mm., long and very 

 slender, nigrescent. Pedicels in flower stout and very short, longer 

 than ihc very papery, white and subulate bracts, but becoming J 3 

 im. long and even slender in fruit. Peduncles nearly filiform, spre:id- 

 ing, often a foot long. Leaves about 1 dm. long, weak, with lax and ta- 

 p.ring petioles and rachis, widely spreading. Leaflets 12-15 pain, el- 

 -iptical, truncate to notched at tip and apicuhue, 7-10 mm. long and 

 about half as wide, minutely pubescent along the margins and midrib. 

 Stipules very thin and papery, subulate, about 1 cm. long or less, uni- 

 ted below. Stems 2-3 ft. long, straggling upward and rather freely 

 Ir. inched. This grows in barrancas ( canoii-.) in the mountains in ra- 

 ther moist places from Oaxaca and Hidalgo Mexico to Guatamala in 

 the Middle Temperate life zone. It i-, probably A. bidentatus H. U.K. 

 a very uncertain species because only the figure remains to represent 

 the species, and we know that these were not always accurate in some 

 cases of well known species. 



Astragalus Guatamalensis var. Oaxacanus (Rosei Jqnes. A. Oaxa- 

 canus Rose in herb. This is a form with smooth, oblong-oval pods on 

 a stip.e .longer than the calyx. Bracts triangular, 5-8 mm. long. Leaf- 

 lets elliptical to na.rrowly oblong-ovate, often ashy. This is Pringie's 

 No. 6264 from Oaxaca. It has the same elongated and slender stems 

 w hich are decumbent, broad leaflets, and blunt pods of the type. It is 

 the common form in Mexico from the states of Hidalgo, Mexico, and 

 Oaxaca. 



Astragalus Guatamalensis var. Lozani (Rose) Jones. A, Lozani 

 Ro.-c in lierb. .Stems a foot high, ascending, slender, freely branched, 

 from underground branches of the root. Leaves 5-7 cm. long, with 

 about 10 pairs of small leaflets which are oval to elliptical and rarely 

 2 cm. long. Internodes 2-5 cm. long. Pods the same as in the other 

 variety but ashy as well as the whole plant. Bracts hardly as long as 

 the calyx tube. Sierra de Pachuca Hidalgo ^Mexico, Pringie's No. 69.'i5 

 July 28 1898, 9000 ft. alt. Middle Temperate life zone. The type is the 

 National Herb. No. 462652. Also collected by Nelson in Oaxaca, No 

 1940, Nov. 12 1894. Zacatecas Mexico, Rose, Aug. 26 1897, Nat. Herb 

 No. 301562. 



Astragalus Guatamalensis can be 'separated from extreme forms 

 of A. strigulosus only by the flowers being in heads, and by the broad- 

 er and blunt pods. It is described as having sessile pods without par- 

 tition and with creeping stems, but this not true of the specimens cited 

 by the author in his description. Both species have the narrow sep- 

 tum going part way across from the dorsal suture. 



148 Astragalus Painteri Rose in herb. This is like the preceding 

 species but the calyx teeth are minute and de'toid and about a (luarter 

 as long as tube, stipules subulate and not at all connate. Pods open- 

 ing only along the dorsal suture, about 1.5 cm. long, oblong oval, trun- 

 cate at base, abruptlj' apiculate-acute at tip, n.u h obcompressed and 

 broadly sulcate dorsally but not at all ventr; ly, smooth, strongly 

 cross-nerved, inflated, chartaceous, with septu :. intruded about a half 

 mm. high. Ventral suture much thickened, raised and white. St'pe a 

 little, shorter than calyx. Flowers white but purple-tinged, about 1 

 cm. long, in heads ancl soon reflexed. Banner oval, about 5 mm. long, 

 arched to 45 degrees beyond calyx tips, with sides reflexed 1 rnjii. 

 wide in the middle, about 1 mm. longer than wing.'<. Wings arched a 

 little, lanceolate, about 2 mm. wide in ths middle. 2 mm. longer tha i 

 keel. Keel half-rhomboidal, very obtuse, about 3 mm. high, purple 

 tipped. Calyx about hemispherical, 3 mm. long, rounded at ba5e and 

 inserted near the corner, minutely nigrescent, about twice as long a> 

 the triangular and white bracts. Teetii variable but mostly very short. 



