ACACIA SEEDLINGS. 155 



Hypocotyl terete, creamy to brownish, up to 1*5 cm. long, 

 2 to 3 mm. thick at base, 1 to 1*3 mm. at apex. 



Cotyledons sessile, auriclecl, oval-oblong to obovate, 6 to 

 7 mm. long, 4 to 5 mm. broad, upperside yellowish, becoming 

 green, underside yellowish, becoming pale green, yellowish- 

 green or reddish-brown, with raised centre line or longi- 

 tudinally wrinkled. 



Stem terete, pubescent. First internode *5 mm.; second 

 about 1 mm.; third to sixth 1 to 4 mm. 



Leaves — No. 1. Abruptly pinnate, petiole 2 to 7 mm,, 

 green, glabrous; leaflets three to five pairs, oblong-acumin- 

 ate, terminal pair sometimes obovate, up to 7 mm. long, 

 1 to 3 mm. broad; rachis5 mm. to 1*4 cm., green, glabrous, 

 with terminal seta. 



No. 2. Abruptly bipinnate, petiole 4 to 6 mm., glabrous 

 or slightly pilose, with terminal seta; leaflets two to^four 

 pairs, oblong-oval to oblong-acuminate, 2 mm. long, 1 mm. 

 broad; rachis 3 to 8 mm., glabrous. 



Nos. 3 to 7. Abruptly bipinnate, petiole 4 to 9 mm., 

 pilose, sometimes slightly dilated, with midrib along lower 

 margin; leaflets two to four pairs; rachis 4 to 7 mm.; 

 stipules short spines. 



Nos. 8 to 20. Abruptly bipinnate, petiole 5 mm. to 1 cm. 

 long, sometimes dilated to 3 mm. broad, midrib below centre 

 of lamina, hirsute, with terminal seta; leaflets three to 

 four pairs; rachis 4 to 9 mm.; stipules up to 5 mm. 



Nos. 21 to 30. These may be phyllodes, or abruptly 

 bipinnate, petiole up to 1*6 cm, long, 5 mm. broad, hirsute; 

 leaflets three to five pairs; stipules up to 6 mm., sometimes 

 hirsute. 



Nos. 31 to 40. Usually phyllodes, up to 2 cm. long, 5 to 

 7 mm. broad, with numerous lateral veins, pilose or glabrous* 

 margins sometimes nerve-like, mucronate, no glands seen. 



