﻿. 1. , -patuhitus Sheldon, 

 1. c. 9, n8. The last 

 &&»s canescens Nutt. This species is quite variable. 



Astragalus hyalinus. Nearest to A . tripkyl/us Pursh . 



Stems loosely matted, usually erect, i to 2' high, at the 

 ends of the much branched thick root; stipules very con- 

 spicuous, large, much imbricated, at least 9" long, smooth 

 except at the very base, where there is a tuft of long, 

 straight, white hairs; leaflets narrowly elliptical to ob- 

 lanceolate, about 6" long and 2" wide, obtuse or barely 

 acute, 3, densely silky all over, with hairs attached by the 

 middle, on a varying petiole; flowers, one or two in a 

 place, sessile at the base of the leaf, apparently white 

 with a dark keel tip; calvx vt-rv whitc-villous, cylindrical, 

 6" long, i}4" wide, little exceeding the stipules, teeth 

 subulate, 1" long; corolla very pubescent outside, banner 

 oblanceolate, emarginate, about 1' long and i l / 2 " wide, 

 proper blade 3" long; wings narrowly linear and as long 

 as the banner; keel 3" shorter than the wings, very nar- 

 row, apex but little arched; fruit immature but manifestly 

 sessile, very white-silky, ovate or triangular, round in 

 cross-section, 3" long. At first I took this to be an ab- 

 normal form of A. triphyllus, due to a fungus, but care- 

 ful examination failed to show any fungus growth, while 

 some specimens showed normal vigorous pods. This 

 differs from A. triphyllus in the pubescent corolla, 

 broader leaflets, stems, and the very conspicuous stipules. 

 A. triphyllus is densely congested, like Krynitzkia are- 

 tioides. Upper Lawrence Fork, Kimball County, Ne- 

 braska, No. 80; Cliffs, Banner County, Nebraska, 

 August, 1890; Hills, Kiowa valley, Scott's Bluff County, 

 Nebraska; all collected by Rydberg. Type in Univer- 

 sity of Nebraska and duplicate types in National Herba- 



