l66 Preussii. 



ed claw. Calyx tube about 5 mm. long and 4 mm. high, or a little 

 longer and naiTower, quite oblique at tip and base, the upper side 

 arched and the lov/er straight, almost white, very thin, the 3uba- 

 late teeth from a broad base about half as long as tube. Bracts 

 triangular, hyaline, shorter than the rather slender pedicels which are 

 2-4 mm. long. Spikes 1-3 dm. long. Peduncles often a foot long, 

 in the middle axils, strict. Leaves about 2 dm. long, nearly sessile, 

 ascending, with 10-12 pairs of linear-lanceolate leaflets about 2 cm. 

 long, and placed on the upper side of the rachis. Stipules large, 

 green, reflexed, about 1 cm. long, acuminate. This is the type bat 

 the leaflete vary to broadly elliptical and refuse and 1 cm. long. 

 Stems from 1-3 ft. long, either strict or decumbent and branched 

 below. From the Sevier valley Utah at Salina to Verde Arizona, 

 throughout the Navajo Basin and over in the Rio Grande valloy of 

 New Mexico as far as Mesilla Park, extending a little into the Troni'"], 

 in poor clay soil. Forms of this occur v/ith a pseudostipe 2 mm. 

 long caused by the drying of the pulp. 



Astragalus Patterson! var. praelongus (Sheldon Minn. Bot. Stud. 

 9 23 (1894) as species) Jones Cont. 10 65 (1902). A. procerus Gray, 

 A. Rothrockii Sheldon. This is a form with oval pods plum-like and 

 about 1.5 cm. long. Flowers stubby, with broad banner and wings sel- 

 dom much longer than keel, with calyx teeth deltolj and 4 times shorter 

 than the tube, with peduncles much shorter than the leaves and sub- 

 terminal, and with oval to oval-ovate leaflets 1-2 cm. long and very 

 glaucous. The extreme form seems very distinct but it intergrades 

 In every particular. In the Virgin valley around alkaline seeps and 

 westward to the Charleston Mts. Tropical. Forms intergrading 

 variously are found all the way from the Staked Plains of Texas 

 through the Rio Grande valley and the Little Colorado and the 

 Navajo Basin, but true procerus seems to be found only in the restrict- 

 ed area. A form referred to A. Rothrockii from Wooton is an in- 

 tergrade. 



114. Astragalus sabulosus Jones Cont. 2 239 (1891). Pods 3-5 

 cm. long and about 1.5 cm wide and high, oblong, straight, barely 

 oblique, the stout triangular flattish beak straight, about 2-3 mm. long 

 and a little above the middle of the end, the base shortly triangular 

 pod finely cross-lined and a little reticulated, reflexed and mostly 

 pendent, ashy with minute hairs fixed by the base; surface uniform 

 but little sulcata or grooved ventrally, dorsal suture not evidently 

 or slightly intruded, nearly roiaur in cross spction. a little inflated 

 and walls thinner than in Patterson!. Flower 4-8 on a rachis hardly 

 2 cm. long, almost capitate, about 2.5 cm. long. Banner elliptical, 

 about 1.5cm,long, arched abruptly at end of teeth to 45°, with sides 

 much reflexed, nearly 1 cm. longer than ]<■■ el. Wings about 2 mm. 

 longer than keel and ranch narrower. Kerl rip-irly ] cm . long, straight, 

 at tip abruptly erect or nearly so and 4-5 mm. high, the tip triangular 

 but very obtuse and rounded, dark. Calyx tube 1 cm. long, fi mm. high, 

 oblique at both ends, by being cleft deeper above and by the truncate 

 base a little saccate abo-i-e, inserted a trifle below the middle on a 

 very stout hairy pedicel 2-3 mm. long, brownish-nigrescent with close 

 pressed hairs. Calyx teeth deltoid about 2 mm. long. Hyaline bracts 

 ovate and about 3 mm. long. Stipules deltoid to triangular, coarse, 

 thick and spreading, about 5 mm. long. Prdnucles very stout, about 

 2 mm. thick, and 5 cm. long, shorter than the leaves, in the middle 

 axils. Leaves in flowering time rarely 1 dm. long, later ones often 

 a foot long, conspicuously petioled, the ppticle much longer than rachis 

 Xvhen leaflets are few, when with several pnlrs of leaflets it Is often 

 shorter than rachis. Leaflets on the nnner «ide of the rachis, rarely 

 single but mostly 1-3 pairs In the young leaves or 5-6 pairs in the 

 late ones, about ovate-diamond-shaped or obovate or even lanceolate. 



