ACACIA SEEDLINGS. 157 



but absent from others, while on the phyllodes of the 

 mature tree from which these seedlings were raised the 

 gland is always conspicuous. 



Uninerves — Racemosee. 



Acacia myrtifolia, Willd. Seeds from Cheltenham, New 

 South Wales, growing on Hawkesbury Sandstone form- 

 ation, and from Aldgate, South Australia. (Plate III, 

 Numbers 3 to 5a.) 



Seeds shiny brown, oblong, about 3 to 3*5 mm. long, 2 mm. 

 broad, 1*5 mm. thick. 



Hypocotyl erect, terete, brownish-red, 1 to 2*2 cm. loug, 

 1*3 to 1*8 mm. thick at base, *6 to 1 mm. at apex, glabrous. 



Cotyledons sessile, sagittate, oblong, 4 to 5 mm. long, 

 2 mm. broad, remaining erect until they fall, in about ten 

 days, outer or underside brownish-red, slightly convex, 

 upperside brownish-red but paler than underside, glabrous. 



Stem terete in lower portion, angular above where 

 affected by decurrent leaf-stalks, reddish-brown, glabrous. 

 First internode *5 mm.; second 2 mm. to 1*7 cm.; third 

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

 2*2 cm.; sixth 4 mm. to 1*4 cm.; seventh 4 mm. to 2'6 cm. 



Leaves — Nos. 1 and 2. Abruptly pinnate, forming an 

 opposite pair, petiole slender, from about 3 mm. to 1 cm. 

 long, brownish-red, glabrous; leaflets usually two pairs, 

 rarely three, out of forty pairs of leaves counted, thirty- 

 eight had two pairs of leaflets on each pinna, while of the 

 other two pairs of leaves each had two pairs of leaflets on 

 one pinna and three on the other, (Plate III, No. 5) oblong, 

 acuminate, up to 6 mm. long, and 2*5 mm. broad, midrib 

 and secondary vein showing under pocket lens, upperside 

 green to pale green, sometimes tinged with red, underside 

 reddish-green, to red; rachis 2 to 5 mm. long, glabrous, 

 excurrent. 



