Reventi-Arrecti. 159 
2A. 
raised externally also. with tip not conspicuously declined. 
Flowers rather spicate, 1.5-2 cm. long, white or nearly so. Calyx 
cylindrical, 58 mm. long, nigrescent. Banner oblong ovate 
7-15 mm. long, arched rather abruptly beyond calyx tips 
to 45 to 90 degrees, much longer than keel. sides reflexed 2 mm. 
wide below. Wings about straight, 2 mm. wide, longer than keel. 
Fruiting peduncles nearly as thick as stems, coarsely sulcate. 
Leaves narrow, with petiole shorter than rachis. Leaflets el- 
liptical to linear. not over 2.5 cm. long, separated about half their 
length. Stems coarsely sulcate, bent at the nodes which are few 
and mostly congested near the root except in A. adanus. densely 
tufted and sparsely pubescent except when young, the whole 1-2 
ft. high. Stipules hyaline, inclined to be connate below, broad 
and rather short. Reventi. 
Proper stems almost none. 115 reventus. 
Stems 1-2 ft. high. 116 adanus. 
Pods stipitate. coriaceous to papery, evidently inflated, finely 
cross-ribbed. Plants with conspicuous stems except in forms of 
A. arrectus. Flowers racemose, rather ascending. Leaflets 5-10 - 
Pairs. , 
2AB. Pods coriaceous to papery. nearly linear to oblong, 2-3 cm. - 
long, including stipe, with triangular-cordate cross section, ab- 
ruptly contracted at tip into the flat beak which is nearly in 
line with the dorsal suture, nearly straight and erect, the calyx 
often recurved. Flowers 1-1.5 cm. long. Arrecti. 
Stems slender, with several nodes. ; I17 arrectus. 
2A2B. Pods smooth, cartilaginous to coriaceous, 2-7 cm. long, al- 
most 2-celled, conspicuously sulcate at both sutures, much ob- 
compressed and arcuate, long-stipitate on a recurved pedicel 
and with tips erect, and long-acuminate-triangular, on axillary 
peduncles about 1 dm. long, shorter than the leaves, few, rather 
capitate in flower. Leaves about 1 dm. long, almost sessile. 
with about 10 pairs of broadly to narrowly elliptical leaflets 
1-2 cm. long and rounded to retuse and nearly contiguous. Stems 
weakly ascending, 1-2 ft. long, with rather many nodes and 
slender internodes, tufted from rather woody roots. Flowers 
probably white. about 2 cm. long. Calyx cylindrical. 5-7 mm. 
long, the teeth shorter than the tube, on short and stout pedicels. * 
Stems decumbent, slender, 1-2 ft. high, from the woody crown. 
Vallares. 
Flowers 2 cm. long. Pods 2 cm. long or more. 
Stems coarse and low, with few nodes. Pods 2 cm. long. 118 Cimze. 
Stems slender, with many nodes. Pods 4-5 cm. long. tro vallaris. ` 
Flowers and pods 1 cm. long. 120 Bolanderi. 
2A3B. Pods wholly 2-celled by sutures being united and forming a 
double nartition which splits through when old forming two se- 
parate cells, but a plum like fleshy fruit when ripe, which is 
generally sulcate at one or both sutures, on slender stipes at 
least as long as the calyx. oblique but little if at all arcuate, ab- 
ruptly rounded at tin, with very short and stout not flat up- 
curved beak inserted above the middle of the end, laterally com- 
pressed when dry, reflexed or indifferently spreading, ventral 
suture rather prominent, stipes about 7 mm. long. Flowers 
white, about 1.5 cm. long, rather narrow, widely spreading or re- 
flexed when old. Banner ascending in gentle arc to 45 degrees 
beyond calyx tips, oblong-oval. Wings straight, about 3 mm: 
longer than keel, 2 mm. wide. Keel straight, with tip abruptly 
bent to erect, about 3 mm. long and high, often dark-tipped or 
not. Calyx nearly equaled by the teeth which are subulate, 
Tube campanulate to cylindric. Bracts about 2 mm. long, subu- 
