243 
BISULCATI. 24. 
Pods wholly 1-celled, pendent on a slender stipe 
"which exceeds the calyx except in A. oocalycis, oval to 
linear. 7-25 mm. long, 5-7 mm. wide, triangular-pointed 
to apiculate, completely obeompressed ventrally, and 
dorsally often flat, nearly smooth to conspicuously and 
-parallel-cross-veined, chartaceous, opening along the 
ventral suture if at all, not explanate, cross section that 
of a vertical half-section of the figure 8 by having the 
ventral side bisulcate, the grooves being on each side of 
the conspicuously raised and thickened suture (when 
young the pods are normally greatly laterally compressed 
‘and not sulcate), ventral suture often convex, rigid, with 
a thin edge, dorsal suture not evident. Flowers 7-15 mm. 
long, narrow (broad in oocalycis), with slightly exserted 
claws, horizontal, reflexed in fruit, densely spicate, be- 
coming looser in fruit, many, the keel conspicuously 
elongated and mostly as long as the banner. Banner 
nearly ovate, 5-7 mm. long, with sides greatly reflexed 
and so seemingly narrow, deeply notched, rather 
abruptly arched beyond calyx tips and keel to at least 
45°, veined below. Wings obliquely oblanceolate, nar- 
Tow, obtuse, much arched and exposing base of keel, not 
over 2 mm. wide, barely surpassing keel. Keel blade lu- 
nate in general outline, about 7 mm. long, the base 
straight and then gently arched to the nearly erect and 
rounded purple-spotted tip, abeut 3 mm. wide. Calyx in- 
clined to be inflated, very thin and hyaline, normally 
white, rarely red, saccate at base on the upper side, 2-5 
