ACACIA SEEDLINGS. 



117 



Hypocotyl terete, at first pale, becoming brownish-green, 

 6 mm. to 1*8 cm. long, the largest being from Hill Top, 1*5 

 to 1*7 mm. thick at base, *6 to 1 mm. at apex. 



Cotyledons sessile, auricled, oblong to oblong-oval, 4 to 

 6 mm. long, about 2*5 mm. broad, upperside green, under- 

 side reddish to reddish-brown or brownish-green, becoming 

 revolute and cylindrical. 



Stem at first angular, becoming terete, sometimes at 

 first reddish, later green to greyish-green, glabrous to 

 slightly pilose. First internode *5 mm.; second 1 to 2 mm.; 

 third and fourth usually 1 to 4 mm. but 2 cm. in one Lane 

 Cove plant (collected by Mr. J. J. Fletcher); fifth usually 

 3 mm. to 1 cm. but 5'6 cm. in one Lane Cove plant (J. J. 

 Fletcher); sixth 6 mm. to 2*8 cm.; seventh 8 mm. to 5*3 

 om., the longest and some of the moderately short being 

 from AYoodford. 



Leaves — No. 1. Abruptly pinnate, petiole 5 to 6 mm., 

 in Hill Top specimens up to 1 cm., glabrous; leaflets two to 

 four pairs, oblong-acuminate, 4 to 7 mm long, 2 to 3 mm. 

 broad, upperside green, underside reddish to pale green; 

 rachis 5 to 8 mm., up to l'l cm. in Hill Top specimens, 

 with terminal seta. 



No. 2. Abruptly bipinnate, petiole 6 mm. to 2 cm. in 

 Hill Top specimen, sometimes with small gland, with ter- 

 minal seta; leaflets two to four pairs, oblong-acuminate, 

 the apical pair often obovate, 2 to 5 mm. long, 1 to 2 mm. 

 broad; rachis 6 mm. to 1 cm., stipules small. In one case 

 this leaf was simply pinnate with one pair of leaflets, 



Nos. 3 and 4. Abruptly bipinnate, petiole 1*4 to 2*7 cm. 

 in No. 3, 2*5 to 5*2 cm. in No. 4, the latter sometimes 

 vertically flattened to 7 mm. broad, with a strong nerve 

 along or close to the lower margin and a finer one above, 

 not always confluent at the apex, a gland sometimes on 

 upper margin; leaflets four to six pairs in No. 3, and five 



