338 GIANT ACACIA FROM THE BRUNSWICK RIVER, 



Hah. — Tengoggin Mt. (1000 ft.), near Mullumbimby, Brunswick 

 River, N.S.W.; also Mullumbimby Creek, a tributary of the 

 Brunswick (W. Bauerlen). 



According to Bentham's classification this Acacia belongs to the 

 series Phiritierves, sub-section Dimidiatce. 



This is probably one of the largest of all the Acacias. It has 

 been found in the Mountains measuring over 160 feet, with a 

 trunk from 50-60 feet clear of limbs, and a diameter from 2 to 4 

 feet, and on the banks of creeks 140 feet high, and in some 

 instances " so high that the leaves could not be seen " (dis- 

 tinguished). 



The flowers are small, in loose racemes with fairly long pe- 

 duncles. Branches pendulous. Phyllodes vertically flattened and 

 also twisted towards the base, thin, quite glabrous. The pods 

 are very difficult to procure owing to their ripening and falling in 

 what is usually the wettest part of the year. In many instances 

 pods were caught while falling from the trees when every seed 

 was found to have begun to germinate. 



They are very variable both in length and breadth, some being 

 very broad and a little constricted between the seeds, w^iile others 

 from the same tree are very narrow and much constricted, the 

 valves are all very thin. 



The bark is quite distinct from A. binervafa, its nearest ally. 

 It is inclined to be smooth and exudes very little gum, as far as 

 seen, and is reputed to be poor in tannin. 



The timber is pale coloured right to the heart, as far as seen. 

 It will be described subsequently. 



The flowers, bark, seeds and timber all emit an alliaceous odour 

 when fresh, reminding one of Dysoxylon rufum. 



Its closest affinity is with A. binervata, which it resembles in 

 the penniveined reticulations of the phyllodes and in the flowering 

 racemes, but differs from it in individual flowers, pod and seed. 



It ranks wdth A. excel sa in size and the shape of the seed and 

 aril, but diff'ers in the nervation of phyllodes, peduncles and 

 flowers. 



