OF ARTS AND SCIENCES. 361 



near Fort Moliave, by J. G. Lemmon, May, 1884, Closely allied to 

 A. nolhoj-ys, Gray, but with much smaller flowers and calyx. 



Astragalus Okcuttianus. Stems numerous, slender, decum- 

 bent, a foot long, sparingly strigose-pubescent : leaflets 8 to 10 pairs, 

 rounded, 1 to 3 lines broad : peduncles shorter than the leaves, 2 or 3 

 inches long in fruit ; raceme loose, few-flowered : calyx campanulate, 

 2 lines long, the teeth mostly equalling the tube : pod linear-falcate, 

 ascending, coriaceous, attenuate to a stipe shorter than the calyx, with 

 a dorsal groove and acute ventral suture, 2-celled by the intrusion of 

 the dorsal suture, 9 lines long. — Allied to A. Arizonicus, rather pecu- 

 liar in habit, the small round leaflets upon an elongated rhachis exceed- 

 ing the racemes. In Cantillas Canon (" Tantillas " of Palmer), Lower 

 California, by C. R. Orcutt, August, 1883. 



Astragalus procumbens. Biennial or perennial, with numerous 

 short procumbent and matted stems, canescent throughout with a 

 short closely appressed straight pubescence : leaflets 2 to 6 pairs, ob- 

 lanceolate to oblong-obovate or -oval, 2 to 5 lines long : peduncles 

 usually exceeding the leaves, bearing a short few-flowered raceme : 

 flowers spreading or reflexed ; calyx campanulate, with narrow teeth 

 several times shorter than the tube ; corolla twice longer (about 3 lines 

 long), yellowish to deep purple : pod sessile, thick-coriaceous, 1-celled, 

 turgid with prominent ventral suture, and at length deeply impressed 

 dorsal one, oblong, spreading, 6 to 8 lines long. — Near Fort Wingate, 

 New Mexico, by Dr. W. Matthews, U. S. A., in 1882 and 1883, and 

 near the Indian village of Laguua, Lemmon, 1884. Also previously 

 collected by Dr. Palmer, but locality uncertain. Nearly allied to 

 A. Jiitmistratus. 



Astragalus Mohavensis. Biennial, hoary throughout with short 

 white strigose pubescence, the branching stems a foot long or less : 

 leaves rather long-petiolate, the leaflets 2 to 4 pairs, obovate to oblong- 

 oliovate, 3 or 4 lines long, obtuse: raceme little exceeding the leaves, 

 few-flowered : calyx turbinate, nearly 2 lines long, the slender teeth 

 about equalling the tube ; corolla 3 lines long, pur[)lish : pod sessile, 

 coriaceous, narrowly oblong, obcordate in cross-section, the ventral 

 suture slightly curved and very prominent, more or less sulcate on the 

 back and 2-celled by the intrusion of the dorsal suture, 8 to 1 1 lines 

 long, acute. — In a canon south of Newberry Spring in the IMohave 

 Valley, in large depressed masses, by Mr. and Mrs. J. G. Lemmon, 

 May, 1884. Allied to the last and to A. humistratus. 



Astragalus castane/EFOHjus. Biennial or perennial (?), densely 

 cespitose, with numerous branching prostrate and decumbent stems 



