240 J. H. MAIDEN. 



2. With A. genistoides A. Cunn. In A. genistoides the 

 midrib is scarcely if at all evident, and the phyllode is not 

 flattened. The flower in A. genistoides is ciliate, typically 

 spathulate and not linear. 



3. With A. incequiloba W. V. F. A. incequiloba differs 

 from A. Prainii in the phyllodes, which are less rigid, and 

 have the central nerve less defined, less numerous phyllodes, 

 which are slightly narrower and longer (4-5 cm.); tips 

 curved. 



The flower-heads are in racemes, each raceme having 

 leafy bracts with ciliate margins, which spring from a 

 peduncle not in the axil, but a little removed from it, along 

 the rhachis. The flower-heads are slightly oblong in shape r 

 whereas those of A. Prainii are globular. Flowers about 

 23 in the head. Sepals narrow. The petals have black 

 hairs on the outside on the upper half. 



4. With A. heteroneura Benth. This species has phyl- 

 lodes generally similar in outline and a similar midrib, but 

 the fine lateral nerves of this species are absent in A. 

 Prainii. A. heteroneura is also few-flowered, has a broad 

 calyx and a pubescent pistil. 



Pungentes (Uninerves). 



III. A. incequiloba W. V. Fitzgerald, Journ. Bot., l, 18 t 

 (1912). 



This species is hitherto known only from R. Helms' speci- 

 mens collected on the Elder Exploring Expedition, Victoria 

 Desert, Oamp 56, 19th September, 1891. The following 

 specimens appear to be referable to it. 



1. A shrub about four feet high, in flower only. Oow- 

 cowing, August, 1904 (Max Koch, No. 1030). 



2. A shrub of three feet. In fruit only. Kellerberrin, 

 November, 1907 (W. V. Fitzgerald). 



