196 Key to the System of 



Funicle pale, repeatedly twisted beneath the base of 

 the seed. 



Arboreous, finally tall ; branchlets scarcely angular ; phyl- 

 lodia generally elongated- and narrow-lanceolar, also often 

 conspicuously curved, their secondary venules scantily 

 reticular-connected ; racemes of flower-headlets short, 

 sometimes compound ; stalks of flower-headlets rather 

 long and slender ; fruit arched- or cyclic-curved or 

 irregularly flexuous, rather narrow, bi-convex, slightly 

 constricted between the seeds. A. implexa. 



937. Phyllodia short, narrow, pungent-pointed ... ... 938 



Phyllodia elongated or broad, hardly pointed ... 939 



938. Phyllodia mostly whorled and acicular-linear. 



Shrubby or somewhat arborescent ; phyllodia spreading, 

 sessile, rarely from linear- to ovate-lanceolar, and then 

 lined by two or three venules ; calyx and corolla four- 

 lobed ; spikes densely cylindrical, seldom ovate ; fruit 

 broad-linear, compressed ; arillar appendage rather pale, 

 short, supporting only the base of the seed. 



A. verticillata. 



Phyllodia mostly scattered, from a roundish base 

 narrow-lanceolar. 



Shrub, sometimes tall ; stipules short, pungent ; phyllodia 

 very spreading, sessile, lined by three or four venules ; 

 spikes densely cylindrical ; calyx and corolla four-lobed ; 

 fruit broad-linear, compressed ; arillar appendage pale, 

 short, supporting only the base of the seed. 



A. Oxycedrus. 



939. Primary venules of the phyllodia few, prominent . . . 940 

 Primary venules of the phyllodia numerous, thin ... 943 



940. Phyllodia only twice as long as broad or still shorter. 



Sub-alpine shrub, from low to rather tall ; branchlets acutely 

 bi-angular ; phyllodia very firm, inequilateral, from 

 cuneate- to orbicular-obovate ; primary venules two to 

 four ; secondary venules thin, reticular- joined ; spikes 

 very short, solitary or two or three together ; the in- 

 dividual flowers never numerous, but at a distance from 

 each other ; calyx and corolla generally four-lobed ; fruit 

 linear-cylindrical, arched-curved ; arillar appendage pale, 

 short, supporting only the base of the seed. 



A. alpiua. 



