153 
No. 177. 
Acacia obtusata, Sieb., 
var. Hamilton i, Maiden. 
Hamilton’s Wattle. 
(Family LEGUMINOS^: MIMOSE^.) 
This plant is identic *vith Sieber’s No. 464, and I have already referred to it when 
speaking of A. adunca , A. Cunn., in Part XLYI of the present work. 
At the risk of some repetition I again give quotations in which Sieber’s 
No. 464 is referred to :— 
Then we have “A. crassiuscula, Wendl.,” described in B.Fl. ii, 372 (18G4). Bentham repeats this 
in Trans. Linn. Soc., xxx, 473. 
This is in part Sieber’s No. 464, as stated by him, but it includes Queensland and Tasmanian plants 
of whose identity I am in doubt at present, as I have been unable to obtain satisfactory specimens. 
I will show later that Sieber’s No. 464 is A. obtusata, Sieber, var. Ilamiltoni, var. nov., which I will 
figure and describe in Part XLVIII of this work. (A promise carried out in the present Part). 
Then Bentham (B.FI. ii, 368) (1864) gives A. crassiuscula, Meissn., in PI. Prciss. i, 16 (not of Sieber) 
as a synonym of A. pycnophylla, Benth. He repeats this in Trans. Linn. Soc., xxx, 471 (1875). Meissner’s 
specimen was collected near Albany, W.A. (Princess Royal Harbour.) 
So that we have— 
(1) A. crassiuscula, Wendl. This is A. pycnophylla, Benth. 
(2) A. crassiuscula, Meissner. This is A. pycnophylla, Benth., also (as, indeed, stated by 
Bentham). 
(3) A. crassiuscula, Sieber. His No. 464. This is, I repeat, A. obtusata, Sieber, var. Hamiltoni, 
Maiden. 
I am indebted to Colonel Prain, Director of Kew, for giving permission to 
Miss Smith to figure the Kew specimen of Sieber’s No. 464, which has been litho¬ 
graphed by Miss Plockton on Plate No. 181, and also for some small specimens of 
the plant itself. 
I cannot separate it from A. ohlnsata, Sieb., although the two plants look 
different enough at first sight. 
It may lie described in the following words :— 
An erect, bushy shrub of 5 or 6 feet, quite glabrous, exhibiting a bluish-green cast when gl owing, 
branchlets angular. 
Phyllodia lanceolate, straight or a little curved, sometimes tending to be spathulate, terminating 
in a fine point, the end of the phyllode sometimes bent obliquely, usually 1 ^ to 12 inch 
long, rigidly coriaceous, one-nerved, with thickened nerve-like margins, the veinlets 
inconspicuous, with or without marginal glands, the gland when present being about 
one-fifth of the way up from the base. 
B 
