NOTES ON ACACIA. 191 



"Flora of the Northern Territory," pp. 319 and 330. The 

 two species can be readily separated by the comparatively 

 short phyllodes of A. Pilligaensis, the fewness of flowers 

 in the head, the short broad calyx in contrast with the 

 narrow spathnlate sepals of A. juncifolia, and the more 

 enveloping arillus of A. Pilligaensis. 



Uninerves (Spinescentes). 



A. oxyclada F.v.M., A. spinosissima Benth. (leptacantha 

 Pritzel), A. ulicina Meissner, A. ferocior n. sp. 



This is, in my view, the proper sequence of the four 

 species dealt with. Bentham groups A. oxyclada in Calami- 

 formes (Uninerves), but I think it is better to put it in the 

 Uninerves. 



A. oxyclada F.v.M., in B. Fl. ii, 341. 



I am indebted to Prof. Ewart for a loan of the type. It 

 comes from the Murchison River, W.A., and only one 

 specimen is known. Oldfleld's label (of about 1860) reads: 



"Round shrub, three to four feet, rocks south of Oolin- 

 garrah, No. 984." The Surveyor-General of Western 

 Australia obligingly informs me that this name was prob- 

 ably a local one, and cannot now be traced. 



Evidently Mueller did not agree with Bentham's decision 

 to recognise his own MS. name, for, on examination, it 

 appears that it is figured as the left hand twig in Mueller's 

 Iconography plate of A. ulicina Meissn. This is not the 

 first time that Mueller's plates in this work have been 

 shown to be composite, and the difficulty of botanists is 

 increased because no particulars of the origin of the speci- 

 mens figured are given. 



None of the details of the plate belong to A. oxyclada, 

 except perhaps No. 1, the tip of the phyllode. The point 

 is in the middle of the phyllode as in A. oxyclada (in A. 

 ulicina it is oblique turned to the side), but the peculiar 



