144 R. H. CAMBAGE. 



ACACIA SEEDLINGS, Part V. 

 By R. H. Cambage, f.l.s. 



With Plates V- IX. 



[Read before the Royal Society of N. S. Wales, November 5, 1919.'] 



SYNOPSIS : 



Vitality of Seeds in Sea-Water. 



Sequence in the Development op Leaves. 



Number of Pinnae on One Leaf. 



Divided Leaflets. 



Flowering Seedlings. 



Descriptions of Seedlings. 



Vitality of Seeds in Sea-water. 

 Seeds of Acacia melanoxylon and A. penninervis var. 

 falciformis from Jenolan Oaves were planted after having 

 been immersed in sea-water for 889 days, and both ger- 

 minated readily. 



Sequence in the Development of Leaves. 

 In Part IV, (p. 411), it was pointed out that of 93 species 

 of Acacia seedlings raised 83 had one simply pinnate leaf, 

 and the remaining ten commenced with an opposite pair of 

 pinnate leaves. The following nine additions may now be 

 made to those which produce only one pinnate leaf, and 

 this brings the number up to 92 : — 

 A. asparagoides A. Cunn. A. Bancrofti Maiden 

 A. rigens A. Cunn. A. trineura F.v.M. 



A. juncifolia Benth. A. Simmsii A. Cunn* 



A. conferta A. Cunn. A. complanata A. Cunn. 



A, Hneata A. Cunn. 



A. tetragon ophylla F.v.M. and A. amblygona A. Cunn. 

 are now added to the list of those which produce an 

 opposite pair of simply pinnate leaves, and this brings the 

 number of such species up to twelve. In the case of the 



