190 Key to the System of 



914. Secondary venules of phyllodia prominent, closely 



striolate-reticularly connected. 



Tall shrub, often producing offshoots ; branchlets very 

 angular ; phyllodia almost straight, from elongate-ellip- 

 tical to broad-linear, somewhat cuneate, without any 

 lustre ; calyx truncate or short-lobed ; headlets of flowers 

 solitary or oftener two, seldom several together, on very 

 short stalks ; fruit broad-linear, nearly straight, com- 

 pressed ; arillar appendage of seed rather pale, clasping 

 only the base of the seed. A. stricta. 



Secondary venules of phyllodia very faint. 



Shrub, rather small ; phyllodia from elliptic- to linear - 

 lanceolar, somewhat curved ; headlets of flowers solitary 

 or oftener two together, on very short stalks ; fruit gene- 

 rally small, very narrow, convex, curved ; arillar 

 appendage broadly obconioal, pale, touching only the 

 base of the seed. A. microcarpa. 



915. Headlets consisting of few or even only two flowers. 



Tall shrub ; phyllodia from broad- to narrow-lanceolar, 

 firm, their marginal and median-longitudinal venules 

 prominent ; racemes short ; flowers comparatively large ; 

 segments of the corolla generally four or sometimes only 

 three; fruit broad-linear, compressed, prominently mar- 

 gined ; seeds brownish, very shining ; arillar appendage 

 pale, supporting only the base of the seed. 



A. myrtifolia. 



Headlets consisting of several or many flowers .. 916 



916. Phyllodia short, ovate or somewhat triangular ... 917 



Phyllodia mostly elongated, linear or lanceolar or 

 obliquely elliptical ... ... ... ... ... 919 



917. Racemes abbreviated or sometimes the headlets of 



flowers solitary or two or three together. 



Shrub, rather tall ; phyllodia firm, from broad- to lanceolar- 

 obovate, glabrous or beset with minute not rarely silky- 

 lustrous hairlets ; headlets of flowers never numerous ; 

 fruit from broad-linear to narrow-elliptical ; funicle very 

 short ; arillar appendage much attenuated, about half as 

 long as the seed. A. brachybotrya. 



Eacemes elongated ... ... ... ... ... 918 



