ACACIA SEEDLINGS. 151 



No. 2. Abruptly bipinnate, petiole 1*2 to 2 cm. long, 

 terete, or sometimes slightly channelled above, glabrous, 

 excurrent; leaflets four to five pairs, midrib distinct, 

 secondary vein showing under pocket lens. 



No. 3. Abruptly bipinnate, petiole 2 to 3 cm. long, usually 

 vertically flattened, up to 1 mm. wide, with a strong nerve 

 along the lower margin, and a finer one bordering the upper 

 margin ; leaflets four to six pairs, the terminal pair gener- 

 ally obovate, and the number of leaflets on the pinnae often 

 unequal; rachis 1*4 to 2*5 cm., glabrous, excurrent. 



No. 4. Abruptly bipinnate, petiole 2*1 to 4 cm. long, 

 vertically flattened, up to 2*5 mm. wide, sometimes with a 

 strong nerve along the lower margin extending to the base 

 of the pinnae, and confluent with a finer nerve along the 

 upper margin, or sometimes with the strong nerve extend- 

 ing along just below the centre line of the lamina, the 

 upper margin of the lamina being bordered with a fine 

 nerve, leaflets seven to eight pairs ; rachis 2*3 to 3*2 cm. 

 long. 



Nos. 5, 6 and 7. Lanceolate-falcate phyllodes with one 

 prominent nerve extending along above the centre of the 

 lamina, thus leaving the greater portion of the leaf-blade 

 on the lower side, which is unusual in the early phyllodes 

 of species of uninerved Acacias. 



Uninerves — Racemosae. 



Acacia penninervis, Sieb. Seeds from Glen Innes, N.S.W. 

 (J. H. Maiden). (Plate II, Numbers 3 to 4a.) 



Seeds black, oblong-oval to ovate, 7 mm. long, 3*5 to 4 mm. 

 broad, 2 mm. thick. 



Hypocotyl erect, terete, light-red to brownish-red, 

 becoming darker, up to 1*8 cm. long, 2 to 3 mm. thick at 

 base, 1 to 1*5 mm. at apex, glabrous. 



