398 



R. H. CAMBAGE. 



No. 4. Abruptly bipinnate, petiole up to 1*8 cm. long, 

 sometimes very slightly dilated, glabrous, excurrent; leaflets 

 up to five pairs; stipules as in No. 3. 



No. 5 and upwards. Usually phyllodes with the midrib 

 running just below the centre of the lamina. 



Uninerves — Racemosae. 



Acacia amcena, Wendl. Seeds from banks of Wollondilly 

 River, Burragorang. (Plate XVI, Numbers 1 to 3.) 



Seeds black, oblong-oval to obovate, 4 to 5 mm. long, 2 

 to 3 mm. broad, 1 mm. thick. 



Hypocotyl erect, terete, at first creamy, becoming pink 

 to red, 1*6 to 2 cm. long, 1*5 to 1*8 mm. thick at base, about 

 '7 mm. at apex, glabrous. 



Cotyledons sessile, sagittate, oblong, apex rounded, 5 to 

 6 mm. long, 2*7 to 3 mm. broad, at first erect, becoming 

 horizontal, revolute and cylindrical, outer or underside 

 reddish-green to reddish, upperside pale green to brownish- 

 green, glabrous. 



Stem terete, brownish-green, glabrous. First internode 

 *5 mm.; second 2 mm. to 1 cm.; third 3 mm. to 2*2 cm.; 

 fourth 3 mm. to 1*5 cm.; fifth 4 mm. to 4*1 cm.; sixth 1 to 

 2'3 cm.; seventh 1*2 to 38 cm.; eighth 1'2 to 2*3 cm. 



Leaves — No. 1. Abruptly pinnate, petiole 3 to 6 mm. long, 

 reddish-green, glabrous; leaflets two to three pairs, oblong, 

 acuminate, often mucronate, 6 mm. long, 1*5 to 2*5 mm. 

 broad, midrib just discernible on upperside, more distinct 

 on underside, upperside greenish-red, becoming green, 

 underside red, glabrous; rachis 4 to 6 mm. long, glabrous, 

 excurrent; stipules flat, ovate, acuminate, 1 mm. long, with 

 central nerve. 



No. 2. Abruptly bipinnate, petiole 1*1 to 1*7 cm. long, 

 slender, brownish-green, glabrous, excurrent; leaflets three 



