67 
2A2BC. Pods wider above, conspicuously flattened laterally except 
in the middle, the valves twisting at maturity and opening at 
tip and to base. Banner erect, oblong. Keel erect and mosily 
produced and very sharp. Calyx teeth very sharp and mostly 
subulate. Leaves never all filiform. Stems rarely wiry. 
9 campestris, > 
2A2B2C. Pods mostly about the same width from tip to base, about 
flat when ripe (conspicuously flattened when young, and round 
in cross-section when ripe in A. junceus), not noticeably sul- 
cate. Leaflets mostly like the rachis, that is round, filiform 
and sulcate, 1-2 pairs, rarely some are flattened a little or the 
rachis flattened and enlarged toward the tip and phyllodium- 
like, rarely jointed to rachis. Stems wiry and rush-like, wide- 
ly branching, open, erect, green. Peduncles, stems and leaves 
about all alike and tapering. Flowers and pods in loose ra- 
cemes and pods reflexed, except in A. Woodruffi. Inflorescence 
longer than the elongated leaves. Stipules thick, green, with 
a broad base, not connate. Mostly tufted plants about 2 feet 
high. 
2A2B2CD. Proper neduncies shorter than the leaves, Calyx 
teeth minute and blunt. Stipules narrow. Pedicels about 
four times the bracts. Bracts minute, triangular. 
IO junceus. 
II Episcopus. 
2A2B2C2D. Pedicels not longer than the bracts, 2-4 mm. long 
Calyx teeth subulate, at least one third to a half the tube in 
length, reddish. Peduncies much longer than the leaves. 
12 lancearius. 
13 Woodruffi, 
2A2B3C. Pods about the same width throughout, linear, abruptly 
acute, little compressed, straight or nearly so, slightly sulcate 
dorsally. Calyx teeth subulate, longer than the tube. Leaflets 
linear-oblanceolate, not like the rachis, not opposite, 3-6 pairs. 
Peduncles axillary, short. Pods reflexed in racemes longer 
than the peduncles. Bracts and stipules minute. 
13a pasqualensis, 
3A. Ceespitose or acaulescent plants with small and mostly arched, 
short and stubby flowers with short claws, rarely 9 mm. long (1.5 
cm. long in detritalis), single to few, mostly racemose, rarely 
capitate, sessile or short-pediceled. Calyx campanulate (rarely 
cylindrical in detritalis) and short, with the mostly short teeth 
not longer than the tube. Peduncles none or short, long in A. 
Gilensis and quinqueflorus. Pods small, sessile, not wider above, 
little longer than calyx, mostly laterally flattened, oblique, charta- 
ceous, or thinly corlaceous never erect, even the flowers mostly 
reflexed, the ventral suture normally concave, rarely convex. 
Seeds single or few. Stipules large, (small in A. quinqueflorus) 
sheathing or rarely free, mostly long-hairy below. Pedicels not 
twisted. Pubescence mostly closely appressed and silvery. 
3AB. Leaflets with sharp needle-like tips. Pubescence attached 
by the middle or not at the end (except in the var. tegetarius). 
The terminal leaflet at least not joined to the rachis (except 
in detritalis). Flowers purple. Keel tin not produced. 
3ABC. Acaulescent and caespitose plants. Flowers on evident 
peduncles. Leaflets when present olaced at the ends of the 
evident petioles. Bracts large and hyaline. Pods linear to 
ovate, not sulcate, about 1 cm. long (longer in detritalis), 
very sharp-pointed. Ventral suture straight or concave, 
sometimes convex at tip. Leaflets flat. i 
14  simplicifolius. — — 
ig detis — o< e 
