434 NOTES ON NATIVE FLORA OF NEW SOUTH WALES, V., 



brush which spreads to the plateau at Robertson, but which, 

 except for a stray plant, is absent at Bowral. The good basaltic 

 soil at Robertson only partly explains the presence of this luxu- 

 rious vegetation, which is further accounted for by the more 

 eastern aspect of the latter place together with its excessive 

 rainfall. 



These three important factors, viz., geological formation, rain- 

 fall and aspect, afford an interesting study in regard to their 

 effect upon the vegetation. 



The Eucalypts to be found on the sedimentary and basalt- 

 capped area around Bowral and before the 22-mile post near 

 Bullio is reached are : — E. Macarthuri Deane & Maiden (Woolly- 

 butt), E. amygdalina Labill. (Peppermint), E. coriacea A. Cunn. 

 (White or Scribbly Gum), E. viminalis Labill. (White Gum), E. 

 regyians F.v.M. (E. fastigata Deane & Maiden), .£\ tereticornis Sm. 

 (Forest Red Gum), E. eugenioides Sieb.( Stringy bark), E. nnmer- 

 osa Maiden (Ribbony Gum or Peppermint), E. stellulata Sieb. 

 (Black Sally), E. piperita Sm. (Sydney Peppermint), E. Sieberiana 

 F.v.M (Mountain Ash), E. punctata DO. (Grey Gum), E. quadrau- 

 gulata Deane & Maiden (Box), E. Smithii R. T. Baker, E. hcemas- 

 toma Sm. (White or Brittle Gum), E. maadosa R. T. Baker (E. 

 Gunnii var. maculosa Maiden; White or Spotted Gum), E. rubida 

 Deane &, Maiden (E. Gunnii var. rubida Maiden, a White Gum), 

 E. dives Schauer (Peppermint, at about 10 miles from Bowral), E. 

 acervula Miq.(^. Gunnii var. acervula Deane & Maiden; E. palu- 

 dosa R. T. Baker), E. Bosistoana F.v.M. (called both Yellow Box 

 and Gum), E. capitellata Sm.(Stringybark). 



One of the most conspicuous Eucalypts around Bowral is E. 

 Macarthuri (Plate xxxiv.), often called Woollybutt from the rough 

 semifibrous nature of the bark; and with its dense spreading 

 foliage it makes a beautiful shade tree, being one of the most 

 ornamental of our Eucalypts. It is found on the flats near the 

 watercourses, and its partiality in this district for the particular 

 geological formation known as Wianamatta Shale is of interest, 

 though its chief desideratum appears to be a deep soil near 

 streams. As illustrating, however, the dominating influence of 



