Acacia quadrisulcata. 



F. V. Mueller, fragmenta phytographiae Australise iii. 127 (1863). 



1, part of a phyllodium. 



2, flower-head. 



3, bracts. 



4, unexpanded flower. 



5, expanded flower. 



6, front- and back-view of a stamen. 



7, pollen-grains. 



8, pistil. 



9, lower portion of a fruit-valve with seeds. 



10, a seed separated. 



11, transverse section of a seed. 



12 and 13, longitudinal sections of seeds. 

 All enlarged, but to various extent. 



