1!I0 



Pubescence attached by the end. 

 ABC. Pods oblong to linear-lanceolate, not reflexed ar- 

 cuate or very oblique, generally variably sulcate dor- 

 sally and obcompressed, not leso than 2.5 cm. long, 

 smooth to very shortly pubescent when ripe, v/ith 

 walls 2-4 mm. thick when fresh, sometimes .5 mm thick 

 in A. iodanthus. Flowers narrow. Calyx appressed- 

 hairy, narrow, cylindrical but rather laterally flattened, 

 truncate to shortly triangular at the oblique base, the 

 teeth less than half as long as the tube. Stem.s 2-3 dm. 

 long, herbaceous, decumbent from a thick and woody 

 root. Internodes longer than the stipules, plants in- 

 clined to be green when well developed, and ashy when 

 young, and then with closely appressed short hairs. This 

 group is somewhat related to the Sarcocarpi. 

 A3CD. Pods very fleshy, with walls about 4>mm. thick, 

 shortly acuminate, cartilaginous when dry, but not 

 greatly wrinkled, arcuate, narrow, 2-4 cm. long, with 

 dorsal suture seemingly a little intruded at times. 

 Flowers 1.25-1.5 cm. long, in heads. 

 Pods with ventral suture much thickened when dry. 



Flowers white. Calyx tube about 7 mm. long. 161 Webberi. 

 Pods with ventral euture raised as a thin edge when dry. 

 Flov/ers normally purple. Calyx tube 4-5 mm. long. 



162 cibc.rui^. 

 ABC2D. Pods not corrugated though finely cross-ribbed, 

 only slightly fleshy, with pulp hardly 1 mm. thick, co- 

 riaceous, smooth, mostly mottled. Flowers about 1 

 cm. long. Stems slender. 163 iodanthus. 



AB2C. Pods from a little to evidently fleshy, chartaceous 

 or thin coriaceous when dry, reticulated and cross- 

 ribbed, somewhat inflated, ovate to linear-oblong, 1-2.5 

 cm. long, very oblique, with sharp, triangular, flat beak. 

 Pubescence of the leaves silvery and appressed, with 

 hairs attached by the base. 

 Pods shaggy with long and spreading hairs. 164 desperatus. 



Pods onl ashy. 165 tephrodes, 



AB3C. Plants nearly acaulescent or with stems only a few 

 inches long, prostrate. Flowers mostly large, never 

 small. Pods with conspicuously pulpy walls 1.5 mm. thick 

 when fresh, thick-coriaceous to cartilaginous when dry, 

 variously wrinkled and obcompressed, broadly ovate to 

 narrowly oblong, sharply acute to acuminate, with mostly 

 flat beak when dry. Argophylli proper. 



AB3CD, Peduncles normally not over 7 cm. long, or less 

 than half as long as the leaves, and so the flowers are 

 clustered among the leaves, occasicnally fruiting 

 peduncles are 1.5 dm. long. Stipules imbricated. 

 Flowers spicate, few. Pubescence silvery and 

 closely appressed. (A. Parryi might be sought hercK 

 AB3CDE Pods not inflated, large, almost smooth. 



165 Shoi'tianus. 

 AB3CD2E. Pods variously inflated, ovate, rarely broader 

 or lanceolate, mostly shaggy. Flowers capitate. 



167 argophyllus 

 AB3C2D. Pods decidedly fleshy when fresh and mostly 

 cartilaginous when dry, ascending, Flowtrs spicate. 

 Peduncles over 1 cm. long, erect or nearly so, longer 

 than the leaves except when rarely leaves are greatly 

 produced. Stems short but with imbricated stipules 



