192 
11 FLEXUOSI. 
Pods coriaceous (rarely papery in A. Sileranus), rather 
fleshy when fresh, corrugated or cross-ribbed, with both sutures 
rather thick and prominent externally but not intruded (some- 
times a little intruded in A. Sileranus), wholly 1-celled, oval to 
nearlyBlinear, oblique, horizontal to reflexed on rather stout, and 
short pedicels,finclined to be sulcate ventrally and sometimes dor- 
sally, variously inflated (scarcely so in A. flexuosus and parviflo- 
rus). Flowers purple, racemose, with campanulate or rarely 
short-cylindric calyx and short teeth. Leaves wide, nearly sessile. 
Leaflets 3-10 pairs, narrow to elliptical, rather distant and long- 
petiolulate, thick and folded, mostly retuse and about 1 cm. long 
(rarely more), Pubescence ashy throughout with minute, ap- 
pressed hairs fixed by the base and often tangled, the surface of 
the leaflets also roughened. Stipules connate below, broad, ra- 
ther small. Stems slender, decumbent, much branched from the 
much branched crown of the erect and rather slender root. Per- 
ennials of the Lower and Middle Temperate life zones, growing 
in gravelly soilin dry places. The natural place for this group is 
just before the Collini but in a linear arrangement it comes here. 
KEY 
A. Flowers small. Calyx campanulate. Pods small or nearly linear, 
rarely 3 mm. wide, cross-ribbed, scarcely inflated, about sessile. This 
approaches the A. sophoroides group in the pods but differs much in 
owers and foliage. 
AB. Pods boat-shaped, hardly twice as long as wile, strongly 
cross-ribbed, inclined to be bisulcate ventrally, much ob- 
compressed, reflexed on twisted pedicels which are as 
long as or longer than the bracts, the ventral suture about 
straight and the tip in line with it. 152 parviflorus. 
A2B. Pods narrowly oblong, 3-4 mm. wide or high, sometimes 
a little wider above, with cross lines faint and fine or pod 
minutely reticulated, walls thin-coriaceous. Pedicels — 
slender, longer than the bracts, reflexed. Flowers about 
1 cm. long. Calyx tube about 3 mm. long. 
Pods short-stipitate, about smooth, higher than wide, _ 
ventral suture not convex. Peduncles longer than lezves. 
153 flexuosus, 
Pods sessile, ashy, 3 mm. wide and high, ventral suture 
conspicuously convex. Pedicels shorter than leaves. © 
154 Diehlii. 
2A. Flowers large, bright-purple 2-3 cm. long. Calyx short-cyl- 
indric, oe Res ui sd corner, very oblique at tip and 
—— ^:2AB. Pods large, 2-3 cm. long, evidently inflated, mostly 1 cm. 
20 wide or | , very oblique, pendent, in short racemes. feos 
OM 
