330 PROCEEDINGS OP THE AMERICAN ACADEMY 



tiuct, little exceeding the calyx (3 lines long), scarcely unguiculate: 

 pod 4 lines long, 1-2-seeded: embryo green. — Collected by C. G. 

 Pringle, April, 1884, iu Northern Sonora, 150 miles south of the 

 boundary, on the sandy beach at the raouth of a canon opening out 

 upon the Gulf of California, forming broad dense clumps two feet high. 

 Distinguished fi'om the other species of the group by the short bright 

 A ellow corolla. It is perhaps the " Dalea (?) sp. n." of Benth. Bot. 

 Sulph. 12, from the Bay of Magdalena, Lower California. 



Dalea rubescens, Watson (Proc. Amer. Acad. 17. 369). This 

 species has been more recently collected in the mountains of Arizona 

 by Lemmon and Pringle. Its stems are very rarely branched as they 

 are in D. aurea, the leaflets (often pinnated) are narrower, the heads 

 much stouter and denser, and the narrower bracts less conspicuous. 



BuONGXiAUTiA MiNUTiFOLiA. A low shrub (1 to 3 feet high), 

 much branched, the slender glaucous-green branchlets nearly glabrous : 

 leaves 1 or 2 inches long, with slender rhachis, the herbaceous lanceo- 

 late stipules a line long; leaflets 10 to 20 pairs, linear, revolute, 1 or Ij 

 lines long : flowers solitary, on short naked peduncles (3 lines long) ; 

 calyx 3 lines long, glabrous, persistent : pod glabrous, oblanceolate, 

 9 lines long, attenuate to a stipe about equalling the calyx-tube. — 

 Found on the foothills south of the Chisos Mountains in "Western 

 Texas by Dr. V. liavard, U. S. A., in July, 1883. 



Astragalus Coxgdoni. Near A. Andersoni, more or less soft- 

 pubescent, the decumbent stems about a foot long: leaflets 8 to 10 pairs, 

 small and orbicular or obovate to oblong (1 to 4 lines long), retuse or 

 obtuse : racemes open, on elongated peduncles : teeth of the campanu- 

 late calyx short and triangular; corolla pale yellow, 4 or 5 lines long: 

 pod sessile, chartaceous, linear, curved, 2-celled by the intrusion of the 

 dorsal suture, puberulent, nearly an inch long, somewhat compressed. 

 — At Ilite's Cove on the Merced River, Mariposa Countv, California, 

 collected by J. W. Congdon, June, 1883. Distinguished from A. An- 

 dersojii by smaller and mostly broader leaves, less pubescence, shorter 

 calyx-teeth, and a narrower less villous pod. 



Astragalus acutirostris. Annual, slender, resembling A. Nat- 

 talllanus : leaflets 5 or 6 pairs, retuse, 2 or 3 lines long : racemes much 

 exceeding the leaves in fruit: calyx a line long, the slender teeth about 

 etjualling the turbinate tube ; corolla whitish, 2 lines long, the keel with 

 an acute often ascending beak : pods (1 to o) scattered on the rhaeliis, 

 like those of A. Nuttalliamts, but the ventral suture nearly straight, 

 8 lines long. — Near Brown's Ranch, Mohave Desert, by Parish 

 Brothers, May, 1882, and on dry rocks above the Calico Mines, 



