404 R. H. CAMBAGE. 



always opposite, oblong-acuminate to almost oval, 3 to 7 

 mm. long, 2 to 3 mm. broad, upperside green, underside 

 paler; rachis 3 to 6 mm. long, green, glabrous, excurrent ; 

 stipules as in No. 1. 



No. 3. Sometimes a pliyllode, or abruptly bipinnate, 

 petiole 1*4 to 2*5 cm. long, vertically flattened and with a 

 strong nerve along or near the lower margin, with some- 

 times a second finer vein above, excurrent; leaflets two 

 to three pairs, lanceolate-acuminate to obliquely obovate. 



Nos. 4 and 5. These may be triplinerved, mucronate 

 phyllodes narrowed at the base, or they may be abruptly 

 bipinnate; petiole up to 2*4 cm. long, vertically flattened 

 to 6 mm. broad, tapering towards the base; leaflets two to 

 three pairs, obliquely obovate. 



The first and second phyllodes are usually triplinerved 

 with the central nerve most prominent, the third and fourth 

 show three fairly prominent nerves with a finer vein next 

 to, and on each side of the central and most prominent 

 one; subsequent phyllodes often have up to seven nerves. 



This is the first seedling described in this series where 

 the No. 3 leaf has been reduced to a pliyllode. In one case 

 while No. 3 was a pliyllode. No. 4 was bipinnate, though 

 this irregularity of sequence is not confined to A. excelsa. 



This species may develop a pliyllode before the stem is 

 half an inch high. 



Juliflor^e — Tetramerse. 



Acacia linearis, Sims. Seeds from Lidcombe, and Wah- 

 roonga, near Sydney. Growing on Wianamatta Shale 

 formation, sometimes at its junction with Hawkesbury 

 Sandstone, and usually along a moist course; also from 

 Mosman, on Hawkesbury Sandstone formation. (Plate 

 XIX, Numbers 1 to 3.) 



