162 R. H. CAMBAGE. 



In the winter months the exposed sides of the flattened 

 petioles and young phyllodes often become purple. Tips of 

 young phyllodes are often brownish-purple. 



Bipinnat^e — Botryocephalse. 



Acacia pubescens, R. Br. Seeds from Lidcombe, near 

 Sydney. Growing on Wianamatta Shale formation, 

 often among small ironstone pebbles. (Plate IV, 

 Numbers 4 to 6.) 



Seeds black, oval, 3 to 4 mm. long, 2 to 3 mm. broad, 

 1*5 mm. thick. 



Hypocotyl erect, terete, pale pink to pale brown, up to 

 2*2 cm. long, 1 mm. thick at base, *5 to '9 rnm. at apex, 

 glabrous. 



Cotyledons sessile, very slightly auricled, oblong, apex 

 rounded, 5 to 6 mm. long, 2 to 2*5 mm. broad, becoming 

 horizontal, revolute and cylindrical, falling in a few weeks, 

 outer or underside brown, with central ridge, upperside 

 reddish to green, glabrous. 



Stem terete, hirsute. First internode '5 mm.; second 1 

 to 5 mm.; third 3 mm. to 1*4 cm.; fourth about 5 mm.; 

 fifth 3 mm. to 1 cm. 



Leaves — No. 1. Abruptly pinnate, petiole 3 to 7 mm. long, 

 reddish-green, glabrous or faintly pilose; leaflets three to 

 four pairs, obovate-lanceolate 4 to 9 mm. long, 1*5 to 2*5 mm. 

 broad, midrib showing under pocket lens, upperside green, 

 glabrous, underside reddish, becoming reddish-green; rachis 

 3 mm. to 1*1 cm. long, glabrous or with a few scattered 

 hairs, excurrent; stipules small. 



Nos. 2 and 3. Abruptly bipinnate, petiole pilose to hispid, 

 6 mm. to 1'2 cm. long, reddish to reddish-brown, excurrent; 

 leaflets four to seven pairs, the terminal pair opposite, the 

 remainder often alternate, upperside green, underside pale 

 green; rachis 4 mm. to 1*2 cm. long, pilose; stipules small. 



