ACACIA SEEDLINGS. Ill 



Plurinerves — Juliflorse — Stenophyllse. 



Acacia aneura, F.v.M., "Mulga." Seeds from Bourke, 

 (J. H. Maiden). (Plate XI, Numbers 1 to 3.) 



Seeds shiny dark brown, ovate, flat, about 5 mm. long, 

 nearly 4 mm. broad, 1*5 mm. thick. 



Hypocotyl erect, terete, pale green, about 3 cm. long, 

 1"5 mm. thick at base, 1 mm. at apex, glabrous. 



Cotyledons two, rarely three, sessile, obovate-oblong, 

 apex rounded, sagittate, 6 to 7 mm. long, 4 to 4*7 mm. 

 broad, obscurely triplinerved and with reticulate venation 

 seen best in dried specimens, at first erect but becoming 

 horizontal in a few days and usually remaining on the plant 

 until the phyllodes appear; outer or underside pale green, 

 sometimes with raised central nerve fairly distinct, upper- 

 side dark green. On a plant with three cotyledons, one 

 was of normal size and the other two were on the opposite 

 side and smaller, being 5 to 6 mm. long, 2*5 to 3 mm. broad, 

 each sagittate. 



Stem terete or slightly angular where affected by decur- 

 rent leafstalks, green, thinly sprinkled with fine hairs. First 

 internode '5 mm.; second 1 mm.; third 4 to 5 mm.; fourth 

 about 1 cm. 



Leaves — No. 1. Abruptly pinnate, usually very slow in 

 developing, petiole 5 to 7 mm. long, pale green, glabrous ; 

 leaflets two pairs, the petiolule sometimes 1 mm. long, 

 obovate-oblong, often mucronate, with sometimes a few 

 hairs on margin, 6 to 9 mm. long, 3 mm. broad, upperside 

 green, underside paler, midrib distinct, especially in dried 

 specimens, secondary nerve and lateral venation more 

 obscured; rachis about 6 mm. long, pale green, glabrous, 

 excurrent; stipules reduced to small scales. One seedling 

 had an opposite pair of pinnate leaves, each with two pairs 

 of leaflets. 



