377 



Paroo, and the Mallei district of Victoria. It is common in 

 most parts of South Australia, and is equally at home on the 

 coast, in the Flinders Range, along the Murray, or in such 

 dry country as the Alberga River, Ooldea, and Lake Peri- 

 gundi. A specimen found by Mr. H. W. Andrew at Sheila 

 Well, near the Alberga, attained, according to his note, a 

 height of 6-7 m., with the appearance of a tree, whereas in 

 other districts it varies between a small and a large shrub. 

 It extends northwards at least as far as the Finke River, 

 Northern Territory. It grows in dry situations, whereas 

 A. salicina loves moist rich soil beside running streams or 

 flats subject to inundation. 



The funicle in A. salicina appears to be always scarlet, 

 and this is also its usual colour in A . ligulata, but in the latter 

 species it is sometimes bright yellow. The two colours are 

 found in the same locality and without any other accom- 

 panying difference. 



In northern specimens of -.4. ligulata the phyllode has a 

 wrinkled cylindrical base 2-3 mm. long, while in A. salicina 

 the base is swollen and smooth. In some moist districts of 

 the south the wrinkling of the base in A. ligulata is less 

 conspicuous. 



Seedlings of .4 . ligulata found under a bush at Ooldea 

 Soak in September had thick, broadly lanceolate, dark green, 

 somewhat 3 -nerved phyllodes. The leaflets were oblong and 

 9 in number, supported on slender, cylindrical petioles which 

 could not become normal phyllodes and doubtless fall off 

 early. Some of the broad, normal ' phyllodes were so small 

 that it seemed impossible that they could ever have been sur- 

 mounted by leaflets. There would thus appear to be two 

 forms of leaf in the seedling : the one caducous and bearing 

 leaflets, and the other (the persistant and normal phyllode) 

 bearing no leaflets. I have never seen seedlings of A. salicina, 

 because, as explained in a previous paper, propagation appears 

 to take place usually, if not always, by young plants rising 

 from underground branches. Tliese suckers have all the 

 appearance of seedlings. The phyllodes are light green, thin 

 and oblanceolate ; the leaflets are 8, 9, or 10, more distant 

 than in A . ligulata and supported on normal, persistant 

 phyllodes or petioles. 



Acacia rivalis, J. M. Black. In the hills near Blinman, 

 with ripe pods (August, 1920; H. W. Andrew). Locally 

 known as the "Silver Wattle," and stated to be the shrub 

 which, in the summer season, produces a large amount of 

 gum, fetching in Adelaide a price of £60 to £70 per ton. 

 Mount Lyndhurst — a specimen received in 1913 from Mr. J. 

 H. Maiden without name of collector, but probably one of 



