NOTES ON ACACIA. 471 



Geologist, and that of his son Walter Mervyn Carne, one 

 of my zealous botanical assistants, who is now in training 

 for the defence of his country. 



Affinities, 

 This wattle belongs to the series Pungentes, sub-series 

 Uninerves. Of members of this sub-series I have contrasted 

 it with A. quadri sulcata F.v.M., a Western Australian 

 species to which (in absence of pods) it seems to be closest 

 related. I have also compared it with A. striatula Benth., 

 — Pungentes (Plurinerves), and also A. gonophylla Benth., 

 — Oalamiformes, (Uninerves), with both of which it displays 

 some obvious superficial resemblance. 



1. With A. quadri sulcata F.v.M. The phyllodes of this 

 species are shorter, finer and more deeply grooved, the 

 peduncles are longer and have only about half as many 

 flowers in the head. The sepals are distinct, very small 

 and narrow, linear-spathulate; petals united above the 

 middle. It is obvious that A. quadrisulcata is markedly 

 different from the new species. 



2. With A. striatula Benth. This is another species 

 that invites comparison, but the phyllodes are shorter and 

 not so tetragonous, and the sepals are free, very thin and 

 linear-spathulate. 



3. With A. gonophylla Benth. This is another tetragon- 

 ous species, but the phyllodes of A. gonophylla are less 

 flattened, narrower, shorter, less rigid, and with a shorter 

 more rigid point than the new species. The flower heads 

 also are in pairs, and each head has only twelve to twenty 

 flowers. The calyx lobes are narrow and the pistil smooth. 



Uninerves (Racemose?). 



2. Acacia Mabell^e, n. sp. 



Arbor umbrosa mediocriter alta, trunco usque ad 1' diametro, 

 surculis junioribus et rhachibus inflorescentise brevibus pilis aureis 



