6 7 



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 mostly 

 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 veet 

 high. 

 2A2B2CD. Proper peduncles shorter than the leaves. Calyx 

 teeth minute and blunt. Stipules narrow. Pedicels about 

 four times the bracts. Bracts minute, triangular. 



10 junceus. 



11 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. Peduncles 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, 3-5 pairs. 



Peduncles axillary, short. Pods reflexed in racemes longer 



than the peduncles. Bracts and stipules minute. 



13a pasqualensis. 



3A. Casspiitose 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, wiith 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 coriaceous 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 no(t at the end (except in the var. tegetirius). 



The terminal leaflet at least not joined to the rachis (except 



in detritalis). Flowers purole. Keel tin not produced. 



3ABC. Acaulescent and casspitose plants. Flowers on evident 



peduncles. Leaflets when present olaced nt 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. 



14 simplicifolius. 



15 detritalis. 



