80 j BOTANY. 
INDIGOFERA LEPTOSEPALA, Nutt. in Torr. & Gray, Fl. 1, p. 298. With the preceding, and at 
Upper Crosstimbers, Indian Territory ; August. 
PHACA DENSIFOLIA, Smith in Rees Cycl.; Torr. de Gray, Fl. 1. p. 344 & 693; Hook. Ic. t. 283. 
P. Nuttallii, T. € Gr. l.c. Cocomungo, California; March 18. Legumes an inch and a half 
long, and more than three-fourths of an inch broad. Seeds numerous, not half the size of a 
pepper-corn. Our plant differs somewhat from Douglas's, as figured by Hooker in his Icones, 
especially in being smoother and the flowers larger, as well as in the larger calyx-teeth; but it is 
undoubtedly the same. 
ASTRAGALUS DIDYMOCARPUS, Hook. & Arn. Bot. Beech., p. 334, t. 81; Torr. & Gray, Fl. 1, 
p. 693. Fields near Benicia, and Corte Madera; April 10-23. The specimens are much 
smaller than those collected by Douglas, Mr. Rich, and Dr. Parry. The legumes are scarcely 
three lines long, and of about the same breadth. "When young they are villous, but nearly 
glabrous (though strongly rugose) when old. The leaves vary in breadth from half a line to 
two lines or more. We have little doubt that A. nigrescens and A. Catalinensis, Nutt. (Pl. 
Gamb.,) are varieties of this species. 
ASTRAGALUS MISSOURIENSIS, Nutt. Gen. 2, p. 99 ; Torr. & Gray, Fl. 1, p. 331, excl. syn. Pursh. 
Gravelly hills, New Mexico, and on Williams' fork of the Colorado, February 6. 
AsTRAGALUS FrÉmMoNTI (sp. nov.): molliter strigoso-cinerea ; radice perenni; caulibus ad- 
scendentibus (10 poll. longis) crassiusculis; foliolis 9-21 ovalibus vel rotundatis retusis ; stipulis 
triangulatis basi tantum petioli adnatis ; pedunculis folium «equantibus, floribus laxiuscule spicatis 
patentibus subsessilibus ; calycis dentibus subulatis tubo campanulato brevioribus; ““ corolla 
purpurea ;" leguminibus immaturis membranaceis inflatis ovatis acuminatis bilocellatis poly- 
spermis estipitatis. Banks of the Rio Virgin; May 3, 1844, Frémont. Var. caule breviori 
(2-3-pollicari ); floribus majoribus; calyce magis cylindraceo et nigro-hirsuto. On the Mohave 
creek; March 3. An early state, only in flower, apparently of the same species as that gathered 
in the same region by Colonel Frémont.  Leaflets 3-6 lines long. Flowers half an inch long; 
the calyx 3 lines long; the corolla apparently white, or whitish; all the petals tipped 
with deep violet purple. The half-grown pods of Frémont’s specimens are over half an inch 
in length, nearly glabrous, very thin, and completely bilocellate.—Gray, M: 
ASTRAGALUS HUMISTRATUS, Gray, Pl. Wright. 5, p. 45. Arroyos, near San Antonita, New 
Mexico; October. In fruit. 
ASTRAGALUS MOLLISSIMUS, Torr. in Ann. Lyc., New York, 2, p. 118; Gray, Pl. Wright. 1, p. 53. 
Rocky ridges of the False Washita, August; and plains of the Upper Canadian, September. 
In flower. 
ASTRAGALUS DIPHYSUS, Gray, Pl. Fendl., p. 34. Sandy places, near Albuquerque; October. 
In fruit. 
ASTRAGALUS (PHACA) LONCHOCARPUS. 了 haca macrocarpa, Gray, Pl. Fendl., p. 36. Bluffs and 
rocky places, on the Llano Estacado; September. The few specimens of this interesting plant ` 
bear only old and dehiscent pods, which are shorter than in Fendler specimens, and are follicular, 
opening as they do only by the ventral suture, and at length spreading out into a perfectly 
plane lamina. The leaflets are nearly all wanting, and the filiform naked petioles are rather 
persistent. The root is - im The name has to be changed, on account of the Astragalus 
macrocarpus of De Candol 
OxYTROPIS URALENSIS, == Prod. 2, p. 276; Hook. ۰ Bor, —Am. 1, p. 145. Sandia mount- 
ains, New Mexico ; October. In flower and fruit. 
OXYTROPIS LAMBERTI; Pursh Fl. 2, p. 140. Rocky hills, of the Upper Canadian ; September. 
Narrow-leaved and loosely-flowered forms. Pods slender and very minutely silky-puberulent ; 
in one specimen of which the flowers are unknown, shorter and thicker, and strigose-hirsute. 
OXYTROPIS SERICEA, Nutt. in Torr. € Gray, Fl. 1, p. 339. Bluffs and rocky places, on the 
Llano Estacado ; September. There is scarce a doubt that this passes into O. Lamberti. 
NTROPHYTA MONTANA, Nutt. in Torr. € Gray, Fl. 1, p. 353. Inscription Rock, New Mexico; 
