ACACIA SEEDLINGS. 407 



greenish-brown to pale red, smooth or with a raised line 

 along centre on which are sometimes one or two gland-like 

 formations, inner or upperside green, glabrous; soon becom- 

 ing horizontal, and in some cases remaining until the 

 phyllodes appear. 



Stem terete and pilose in lower portion, angular above,, 

 where affected by decurrent leaf-stalks. First internode 

 '5 mm.; second 1 mm.; third 3 to 5 mm.; fourth 3 to 7 mm.; 

 fifth 6 mm. to 2 cm. 



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

 green, pilose, excurrent; leaflets three pairs, oblong, 

 acuminate, often mucronate, 5 to 9 mm. long, 2 to 3 mm. 

 broad, midrib fairly distinct, secondary vein showing under 

 pocket lens, upperside green, underside paler, margins 

 ciliate; rachis 6 to 7 mm. long, pilose, excurrent; stipules 

 weak, flat at base, 1 mm. long. 



No. 2. Usually bipinnate, but this species shows consider- 

 able instability in regard to the sequence of its bipinnate 

 leaves. In one instance the second leaf was simply-pinnate 

 with only one pair of leaflets. In several instances the 

 second leaf developed with only one pinna, but the presence 

 of the excurrent point of the petiole, at the base of the 

 rachis, indicated that the leaf was not a typical simply- 

 pinnate leaf, though no evidence could be seen of even the 

 rudiments of the second pinna. In another leaf, each pinna 

 had three leaflets on one side of the rachis, while those on 

 the other side had fused into one abnormal leaflet, extend- 

 ing along the corresponding length of the rachis. 



In normal cases the petiole is 4 to 8 mm. long, pilose to 

 hirsute, excurrent; leaflets two to three pairs, oblong 

 acuminate, margins ciliate, opposite leaflets often of 

 unequal size; rachis 7 mm. to 1 cm. long, pilose, excurrent* 



No. 3. Bipinnate, petiole 7 mm. to 2 cm. long, sometimes 

 slightly dilated, with gland on upper margin, hirsute. 



