ACACIA SEEDLINGS. 143 



ACACIA SEEDLINGS, Part II. 

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



With Plates I to IV. 



[Read before the Royal Society of N.S. Wales, August 2, 1916.'] 



SYNOPSIS: 



Sequence in the Development of Leaves. 

 Vitality of Seed in Sea-water. 

 Descriptions of Seedlings. 



Sequence in the Development of Leaves. 

 It was pointed out in a previous paper (Part I), on Acacia 

 Seedlings, read before this Society in July 1915, that in by 

 far the greater number of about sixty Acacia species, of 

 which seedlings had been raised, the cotyledons were 

 succeeded by one simply-pinnate leaf, which was followed 

 by a varying number of bipinnate leaves, but that in the 

 case of four species it was found that an opposite pair of 

 simply-pinnate leaves appeared next after the cotyledons. 

 The examination of fifteen species more has revealed two 

 further species which have an opposite pair of simply- 

 pinnate leaves. 



Further species which have only one pinnate leaf are the 

 following : — 



Acacia pumila, Maiden and Acacia Flocktonice, Maiden. 

 Baker. ,, homalophylla ,4. Cunn., 



trinervata, Sieb. (with an exceptiou). 



colletioides. A. Cunn. ,, excelsa, Benth. 



oxycedrus, Sieb. ,, flavescens, A. Cunn. 



aspera, Lindl. „ doratoxyloti, A.Cunn. 



flexifolia, A. Cunn. ,, cincinnata, F.v.M. 



Mabellce, Maiden. 



