y 
June 30, 1913 61 
pinnately 3-foliolate, or 1-foliolate toward the ends of the 
branches, subsessile or very shortly petioled, the terminal leaflet 
petioled. Peduncles shorter or longer than the subtending leaf, 
1-flowered, bearing a fcliaceous bract at the summit. Fluwers 
on pedicels 1 to 1.5mm. long, drooping at night. Calyx half to 
three-fourths the length of the corolla, adhering to the pod, its 
tube campanulate, about one-third the length of the lobes. Cor- 
rolla white, pinkish or salmon color, the vexillum usually 
longer than the other petals, well curved away from them at the 
apex. Pods linear, usually rounded when mature, brown, some- 
what attenuate at the unguiculate apex. Seeds oblong, rounded, 
smooth and shining. 
KEY TO THE CALIFORNIAN SPECIES 
Peduncles longer than the leaves 
Plants erect, few flowered 
Glabrous or nearly so A. gracilis 
Pubescent with spreading hairs A. mollis 
Peduncles shorter than the leaves 
Flowers large, 7mm. or more long 
Plant erect, few flowered A. sparsiflorus 
Plant decumbent, many flowered A. aestivalis 
Flowers small, less than 7 mm. long 
Plant decumbent, villous A. pilosus 
Plant decumbent, glabrate A. glabratus 
Acmispon gracilis sp. nov. 
Annual, erect, 3 to 4dm. high: stems slender, glabrous be- 
low, sparingly pubescent above, branched from below the mid- 
dle, the branches ascending: internodes long: leaves few, peti- 
oles tmm. long: leaflets elliptical oblong, acute, yellow-green 
above, paler beneath, the lateral ones subsessile, 13 mm. long, 
3mm. wide, lerminal one 17mm. long, 4mm. wide, the petio- 
lule 4mm. long: flowers mostly terminal, few: pedicels longer 
than the subtending leaves, 16mm. long: bracts narrowly ellip- 
tical, 5 or 6mm. long, 1.5mm. wide: calyx pubescent with 
slightly spreading hairs, tube 2min. long, lobes subulate, ciliate, 
3mm. long, less than 1mm. wide at base: corollas pinkish or 
salmon, apparently not veined, gmm. long, 5mm. deep; banner 
ovate orbicular when spread out, 9mm. long, 7 1mm. wide, its 
