. Report of the geological exploration of the fortieth parallel . -2° long, slender,diffusely procumbent or ascending ; stipules subfoliaceous and more or lesssheathing; leaflets 7—10pairs, oblong, obtuse or refuse; heads rather manyflowered ; corolla violet ¥ long; legume as in the last, but ovate and triangular,silky-villous, very shortly stipitate, and but 6-8-seeded.—From SouthernColorado (Moro River, Fendler,) northward along the Rocky Mountains andRed River Valley to the Arctic Circle and Alaska. In the East HumboldtMountains, Nevada, and in the Wahsatch and Uintas ; 6-8,000 feet altitud
. Report of the geological exploration of the fortieth parallel . -2° long, slender,diffusely procumbent or ascending ; stipules subfoliaceous and more or lesssheathing; leaflets 7—10pairs, oblong, obtuse or refuse; heads rather manyflowered ; corolla violet ¥ long; legume as in the last, but ovate and triangular,silky-villous, very shortly stipitate, and but 6-8-seeded.—From SouthernColorado (Moro River, Fendler,) northward along the Rocky Mountains andRed River Valley to the Arctic Circle and Alaska. In the East HumboldtMountains, Nevada, and in the Wahsatch and Uintas ; 6-8,000 feet altitude;June-September. (262.) Astragalus Nuttallianus, DC. Graxjs Rev., I. c, 199. Annual,stems ascending or erect, 3-18high, minutely pubescent; leaflets 5-7 pairs,elliptical or oblong, obtuse or refuse; flowers few, subcapitate or sometimessolitary, on slender peduncles, light purple, small (2 long,) the keel muchshorter than the banner, with the apex incurved; legume coriaceous, linear,subcompressed, incurved near the base, sulcate dorsally, 2-celled, many-. CATALOGUE. 69 ovuled, sessile, reticulated.—Arkansas and Texas to Arizona and trichocarpus, T. & G. With hispid calyx and slightly hairy legumes;stems 3 high. Found on Stansbury Island, Salt Lake ; June. (263.) Astragalus arrectus, Gray. Proc. Amcr. Acad, 8. 289. Perennial,somewhat cinereous-pubescent or nearly glabrous; steins 1-2° high, erect,silicate, simple or branched; stipules distinct, scarious; leaflets 9-12 pairs, 6-8long, ovate or narrowly oblong, obtuse or retuse ; racemes on long peduncles,loosely rather few-flowered; flowers ochroleucous, 7 long, twice exceed-ing the tubular-campanulate nigrescent calyx ; calyx-teeth rather short andslender, but variable; pod erect upon a spreading or somewhat deflexedpedicel, coriaceous, subglabrous, oblong (f-1 long,) nearly straight, cuspi-date, abruptly narrowed at base into a stipe as long as the calyx, with adeep dorsal sulcus and somewhat carinate vent
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