Ill 
May 1945 Tiie Queensland Naturalist 
12. Young branchlets pubescent, phyllodes ciliolate (eye- 
lashed) on the margin at least in the young stage, 
usually disappearing in the older ones, 2.5-4 cm. long, 
2-5 mm. broad A. frmbriata 
Branchlets glabrous, phyllodes quite glabrous on the 
margin, 4-9 cm. long, less than 2 mm. broad 
A. fimbriata var. perangusta 
13. Whipstick shrub in eucalyptus forest, phyllodes mostly 
falcate, marginal gland at the base or absent, pods not 
more than 1 cm. wide, usually less A. falcata 
Small tree in eucalyptus forest, phyllodes straight or 
falcate, marginal gland above the base, usually very 
prominent and with a side nerve running to it, rarely 
absent or indistinct; pods more than 1 cm. broad 
A. penninervis 
14. Flowers in heads 15 
Flowers in spikes ( "fingerettes" ) 16 
15. Tree, branchlets rounded or somewhat angular; flowers 
cream A. implexa 
Shrub, branchiets very much flattened, flowers deep yellow 
A. complanata 
16. Phyllodes green, pods very narrow (about 5 mm. diam.) 
much twisted when ripe 17 
Phyllodes greyish green, pods prominently veined 1.5-2 cm. 
broad, much twisted and curled when ripe (old ones 
can often be picked up under the trees) . A. aulacoearpa 
17. Creekside or near creekside tree, phyllodes with three or 
more longitudinal nerves somewhat more distinct than 
the others, rachis of flower-spike pubescent, green pods 
pubescent; flowers borne in autumn and winter 
A. Maidenii 
Tree of the open forest, phyllodes usually with three nerves 
much more prominent than the others, and obliquely 
running into one another at the base; rachis or flower- 
spikes glabrous (without any clothing or hairs), flowers 
borne in winter to spring A. Cunninghamii 
18. Trees without spines 19 
Shrub armed with long sharp spines in pairs (stipular 
spines) A. farnesiana 
19. Leaves composed of 3-4 pairs of pinnae, pinnae of 15-25 
pairs of pinnules, individual pinnules (leaflets) more 
than 1 cm. long A. glaucocarpa 
Leaves composed of 7-10 pairs of pinnae, pinnae of 30 
or more pairs of pinnules, individual pinnules (leaflets) 
under 0.5 cm. long A. irrorata 
Natural Arrangement of the Species 
(Modified after Bentham's Arrangement of the Australian 
Wattles in the "Flora Australiensis") 
DIVISION I. PHYLLODINEAE 
Leaves mostly phyllodineous, occasionally with bipinnate leaves 
and phyllodes in various stages of transition. 
