CATALOGUE. 71 
West Humboldt Mountains ; 4,500-6,000 feet altitude ; April -June. Closely 
related to both A. Parryi and A. Beckmthii. (269.) 
An interesting form occurs witli the legumes more coriaceous, less 
arcuate, not mottled, and irregular in the intrusion of the dorsal suture, 
becoming at times essentially the same as the legume of A. Beckwithii. 
The variation is so great as to show that too much reliance must not be 
placed on the form of the legume in determining the species of this section. 
Near Salt Lake City and on Antelope Island, Utah ; May, June. (270.) 
Astragalus BECKvyixnii, T. & G. Gray's Rev., I. c, 221. Perennial, 
glabrous or nearly so ; stems 1-2° long, diffusely spreading ; stipules ovate- 
lanceolate, adnate to the petioles ; leaflets 6-12 pairs, 6' long, broadly oval ; 
flowers (5-8) in a short loose raceme, ochroleucous, 9" long ; calyx-teeth 
subulate, scarcely shorter than or exceeding the nearly glabrous campanulate 
tube ; legume 1' long, glabrous, transversely rugulose, coriaceous, short- 
stipitate, somewhat obcompressed, flattened dorsally with the suture slightly 
intruded, bisulcate ventrally with the prominent suture acutely margined, 
many-seeded. — Salt Lake Valley. Found in Ruby Valley, Nevada, and on 
Antelope Island, Salt Lake ; June, July. (271.) 
Astragalus pteeocarpus. Perennial, somewhat hoary with a minute 
pubescence; stems 1-2° long, decumbent, branched; leaflets 1' long, 
2-4 pairs, distant, linear; peduncles longer than the leaves; racemes short 
and rather few-flowered ; legume 1-1 J' long, J' wide, coriaceous, glabrous, 
sessile, strongly obcompressed (compressed at the apex,) ovate, acute, later- 
ally winged, rugose-veined trahsversly, slightly sulcate dorsally, the dorsal 
suture nearly meeting the somewhat depressed ventral one, many-seeded. — 
A well-marked species, remarkable for its broad obcompressed legumes, 
which are margined their whole length with an entire wing a line in breadth; 
flowers ^' long ; collected only in fruit. Growing in alkaline soil near the 
junction of Reese River wdth the Humboldt, Nevada ; June. Plate XXL 
Fig. 1. A stem ; natural size. Fig 2. Section of the legume ; enlarged two 
diameters. (272.) 
Astragalus eriocarpus. Perennial, canescent with a dense subap- 
pressed hirsute-silky pubescence, acaulescent ; leaflets 4-7 pairs, 4-G" long, 
obovate, somewhat acute or often retuse; the scape-like curved peduncles 
(2-6' long) equahng the leaves ; flowers (3-6) loosely capitate, large (P long,) 
deep-purple, twice longer than the cylindrical calyx ; calyx-teeth subulate- 
