ACACIA SEEDLINGS. 99 



Nos. 4, 5, 6 and 7, may be abruptly bipinnate, with one 

 or two pairs of leaflets or they may be leafless pungent 

 pointed phyllodes. In some cases numbers 5 and 6 may be 

 phyllodes and No. 7 bipinnate. 



No. 8 and upwards. Pungent pointed phyllodes. 



Uninerves — Armatse. 



Acacia armata, R. Br., "Kangaroo Thorn." Seeds from 

 Mount Ainslie, Canberra. (Plate VIII, Numbers 6 to 8.) 

 Seeds black, oblong, 4 mm. long, 2 mm. broad, 1*5 mm. 

 thick. 



Hypocotyl erect, terete, pale green, about 1*5 cm. long, 

 1 mm. thick at base, about '8 mm. at apex, glabrous. 



Cotyledons sessile, sagittate, oblong, apex rounded, at 

 first erect, but becoming horizontal in a few days, 5 mm. 

 long, 2 mm. broad ; outer or underside yellowish to pale 

 green, with one or two parallel ridges along central por- 

 tion ; inner or upperside dark green, glabrous; usually 

 remaining until after phyllodes appear. 



Stem terete, pilose to pubescent, green ; first internode 

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

 fourth 5 to 7 mm.; differing in length in different individuals. 



Leaves — No. 1. Abruptly pinnate, petiole 4 mm. long, 

 green, glabrous; leaflets three to four pairs, ovate acumin- 

 ate, often mucronate, 4 mm. long, 2 mm. broad, pale green 

 on both sides, oblique midrib sometimes seen without lens, 

 second vein showing under lens; rachis 4 to 6 mm. long, 

 glabrous, excurrent, stipules slender 1 to 2 mm. long. 



No. 2. Abruptly bipinnate, petiole 8 to 9 mm. long, pilose, 

 excurrent ; leaflets two to three pairs, not strictly opposite, 

 margins sometimes brownish-red, and with scattered hairs; 

 rachis faintly pilose, excurrent; stipules straight, slender 

 1 to 2 mm. long. 



