Sarcocarpi. 238 
being about straight and the dorsal very convex, the conical and 
stout beak about 4 mm. long and a prolongation of the ventral su- 
ture and in line with it, evidently inflated a little, walls thinner than 
in any of the allied species, coriaceous, less than 1 mm. thick when 
fresh and very thin when dry but rigid and a little corrugated, base 
- cordate. Surface covered with very many fine and parallel cross 
lines close together. Flowers white, in a head, several, about 1.5 
. em. long. Banner ovate, with sides reflexed to the tip and seeming 
triangular, notched a little, arched gently to 45-90° from end of 
calyx tube, about 2-4 mm. longer than keel. Wings nearly linear, 
a little arched, about 2 mm. wide, rounded at tip and about 1-2 mm. 
longer than keel. Keel with tip arched in a quarter circle to the 
very obtuse and rounded tip, the base straight, purple tipped, 3 mm. 
high. Calyx tube oblong, 5 mm. long, nigrescent, the triangular 
teeth about half as long as tube. Bracts about twice the pedicels 
which are short in flower and about 4 mm. long in fruit. Pe- 
duncles about half as long as leaves. Leaves about 1 dm. long, with 
very short petiole, of 8-14 pairs of elliptical to oblong-obovate 
leaflets 5-8 mm. long. Stems slender, weakly ascending to pros- 
trate, rarely 2 dm. long. Stipules about as long as the adjoining 
leaflets. Pubescence shaggy all over except on the more sparsely 
. hairy calyx. On the plains from Texas to western Nebraska and 
Wild Co., Colorado, and eastward to Indiana and Alabama. Lower 
Temperate life zone. 3 
199. Astragalus Tennesseensis Gray in Chapman’s Fl. 98 
(1860). A. Plattensis var. Tennesseensis Gray. Pods lanceolate to 
oblong, acuminate, a little arcuate, the tip forming a flat or round 
upcurved prow, inclined to be obcompressed and sulcate at both 
sutures, very fleshy, but when dry forming a soft and spongy pa- 
pery tissue about 2 mm. thick, much wrinkled, 2-3 cm. 1 long, 7-8 
mm. wide, 3-4 mm. high; nearly round in cross section, very sparsely 
long-hairy, neither suture raised, base „usually obtuse to notched. 
Surface of pod very coarsely corrugated with raised lines and large 
meshes. Flowers 1.5-2 cm. long, white. Banner gently arched to 
45°, ovate, sides reflexed most below, 7-8 mm. long. Wings narrowly 
‘oblong, a little arched, narrowed toward tip, 2-3 mm. wide, 2 mm. 
longer than keel. Keel straight, about 5 mm. long, tip abruptly 
arched to erect and very obtuse, about 3 mm. high. Calyx about 3 
mm. high, the triangular teeth not 2 mm. long. Bracts ovate, 5-7 
mm. long. Pedicels very short. Peduncles shorter than the leaves, 
except the lower ones. Leaves about 1 dm. long. Leaflets ellipti- 
cal, 12-15 pairs, long-petiolulate, separated by about their own width. 
Stipules very large, 1-1.5 cm. long. Pubescence long and softly vil- 
lous except on the upper sides of the leaflets and the stipules. Lower 
Temperate life zone from southeastern Iowa to Tennessee and Ala- 
bama and Missouri. This connects the Sarcocarpi with the Argo- 
phylli and Malaci through A. Parryi. 
