vw Infi ati. 
A4B. Pods conspicuously stipitate. 
A4BC. Pods not jointed to the stipe nor stipe jointed at the ends 
or in the middle, falling away with the stipe and calyx. 
Plants never smooth nor with leathery leaflets. 
A4BCD. Pods completely laterally flattened except in the mid- 
dle, acuminate at both ends, deltoid to triangular at tip, 
clavate, about 3-4 cm. long and fully 1 cm. wide, stipe about 
twice the calyx. Flowers many, racemose, ascending. Calyx 
tube cylindric, 7 mm. long. Pedice!s stout, about 2 mm. 
long. Peduncles 1-2 dm. long, stout, floral rachis about as 
long. Oxyphysi. : 
Pods very flat, long-halberd-shaped. 68 oxyphysus. 
44BC2D. Pods half-elliptical to half-oval, about one third as 
wide as long, tapering into a filiform stipe about half as 
long as pod, 1.5-2.5 cm. long, ascending, not greatly inflated, 
smooth. This section is allied to the A. stenophyllus group, 
Tropical plants. Trichopodes. 
Pods 1.5 cm. long, very slightly flattened in the middle. 69 trichopodus 
Pods 2.5 cm. long, much flattened. 70 capillipes. 
A4BC3D. Pods papery, abruptly contracted into a variable 
stipe, the body 3-4 cm. long (rarely 2 cm. long in forms 
of leucopsis) and at least half as wide as long (not over 
one third as long in fastidius but pod then abruptly con- 
tracted into a short stipe and 3-3.5 cm. long), not lateral- 
ly flattened. Flowers white, rarely tinged with purple, 
in spikes. Tropical plants. Leucophyili. 
A4BC3DE. Pubescence silky, of straight ór only wavy and 
fine hairs, not woolly. Flowers rather thick and stubby. 
Calyx hyaline, cleft deeper above. Peduncles subterminal 
and stout. 
Stipules not connate. 71 leucophyllus. 
Stipules connate. 72 curtipes. 
A4BC3D2E. Pubescence woolly, of kinked and tangled hairs, 
or when minute the hairs are spreading and leaf sur 
face appears uneven. 
Pods very obtuse at both ends, half-oval, with stipe : 
I cm. long. 73 leucopsis. 
A4B2C. Pods jointed to the stire and mostly disarticulating at 
the joint. Leaflets thick and leathery, broad. 
A4B2CD. Pubescence dense and hoary with stiff, closely anpres- 
sed, straight hairs. Leaflets imbricated. Stems very short, 
lLutosi. 
Flowers white, in axillary heads, 74 lutosus. 
A4B2C2D. Pods mottled. Pubescence none except in forms of 
A. megacarpus on the calyx and young parts. Leaves in- 
clined to be glaucous. Leaflets not imbricated, often round, 
small. Stipules not connate. Calyx white and hyaline. 
Wings elongated. Keel short, about as high as long. Pods 
with ventral suture raised externally. Plants very closely 
allied. Oophori. : 
A4B2C2DE. Pods papery, greatly inflated, 3-6 cm. long, 2-3 
‚em. wide, abruptly rounded at base and on a Stipe hardly 
as long as calyx. Stems ceespitose and almost none except 
in oophorus. . 
. Stems very short and prostrate. Pods 4-6 cm. long. megac. 
Stems 1-2 feet Toug, erect. Pods about 3 cm. Fi ^ sonhora 
A4B2C2D2E. Pods coriaceous and rigid, somewhat inflated, 
