245 Bisulcati. 



eels villous. Bracts narrowly lanceolate, acuminate, longer than 

 the pedicels. Calyx lobes equal the tube. Leaflets 7-9 pairs, nar- 

 rowly elliptical to linear-lanceolate, very obtuse, apiculate. Sink 

 Valley, Utah. A. scobinatulus Sheldon was partly founded on this 

 and on A. racemosus and bisulcatus. 



206. Astragalus bisulcatus (Hook) Gray Pac. R. R. Rep. 12 

 42 t I B (1860). Phaca bisulcata Hooker Fl. Bor. Am. 1 145 

 (1834), Diholcus Rydberg, Astragalus bisulcatus var. decalvans Gan- 

 doger. Pods linear to narrowly elliptical, triangular-acute at tip 

 and base, 1-2 cm. long, rather shining, with cross-nerves almost none, 

 often involute ventrally with sides touching the ventral suture and 

 so the pod seems cylindrical, chartaceous, usually glabrous. Flow- 

 ers variable but mostly purple, rarely white, about 1 cm. long, not 

 very narrow, nodding, in dense short (2.5-5 cm. long) spikes. Ban- 

 ner arched to 45-90°, 2 mm. longer than keel. Wings 1 mm. longer 

 than keel. Keel nearly straight. Calyx 3-5 mm. long, campanulate- 

 cylindric. Teeth variable, often setaceous, 2-3 mm. long, about as 

 long as tube. Bracts 4 mm. long, ovate-acuminate, hyaline, seta- 

 ceous often. Pedicels 2-4 mm. long. Spikes closely flowered and 

 7.5-15 cm. long in fruit, shorter than the peduncles, and these longer 

 than the leaves. Leaves thickish, nearly sessile. Leaflets 8-13 pairs, 

 elliptical to narrowly lanceolate, somewhat petiolulate, clothed be- 

 neath with minute hairs. Stipules ovate lanceolate, hyaline, acute, 

 upper ones large and conspicuous, connate only below. Stems erect, 

 4-7 mm. thick, rather stout. Plants minutely pubescent even to the 

 pods. Common on the alkaline plains from northern New Mexico 

 to the Saskatchewan, not on the Pacific slope except at the north 

 and then occurring only on the heads of the rivers. Middle Tem- 

 perate life zone. The var. decalvans Gandoger is only a white flow- 

 ered form. 



207. Astragalus oocalycis Jones Cont. 8 10 (1898). A. urceo- 

 latus Greene. Pods like those of A. Haydenianus but very shortly 

 atipitate to long-stipitate, obcompressed, oval, 7 mm. long, 3 mm. 

 wide, nearly flat, finely cross-nerved, smooth, immature pods lat- 

 erally flattened. Flowers nearly sessile, densely spicate, somewhat 

 reflexed, yellowish-white; petals 7 mm. longer than calyx, the blades 

 hardly half as long as calyx tube. Banner oval, thick at base, arched 

 to 45-90° in a gentle curve, the erect part a little over 2 mm. 

 long, very stubby, with sides reflexed above. Wings oblanceolate, 

 nearly straight, nearly as long as banner, about 2 mm. longer than 

 keel. Keel obtuse, short, forming about a half-circle, 3-4 mm. long, 

 2 mm. wide, purple-tipped. Calyx greatly inflated, 9 mm. long, 

 7 mm. wide, hyaline, shaggy-villous with white hairs, with straight 

 base and upper side arched near the base ; teeth triangular, 2 mm. 

 long. Pedicels almost none. Bracts 7-9 mm. long. Peduncles 9 cm. 

 long, stout, with dense spikes 5 cm. long. Leaves ascending, about 

 1 dm. long, with leaf rachis tapering, sulcate and not over 8 cm. 

 long, the petiole about 2.5 cm. long. Leaflets thick, 8 pairs, opposite, 

 linear, acute at both ends, long-petiolulate, puberulent below, smooth 

 above, 3 cm. long, 7-10 mm. apart, 1-3 mm. wide. Stipules hyaline, 

 deltoid-triangular, adnate, 5-7 mm. long. Stems erect, flexuous, 2 

 feet higii. Internodes about 3-4 cm. long. Pubescence ashy, with 

 hairs attached by base but tapering below and with a little knob as 

 if a rudiment of a branch of a hair attached near the middle. On 

 bottom lands at Aztec, New Mexico, and Arboles, Colorado, Wooton 

 and Baker. Lower Temperate life zone. This is probably not a 

 good species, has the appearance of a sport and the general look of 

 A. racemosus, as if caused by some insect injury, but Baker's 

 specimens from Arboles seem perfectly normal and in good fioiit, 

 the calyx is much the same as in A. Lehmanni of Asia. The leaves, 

 peduncles and stems are about equally green. The pod is from al- 

 most sessile to long stipitate. 



