BY W. M. CARNE. 853 



after the soil-surface of the shale round about has dried up. On 

 drying, instead of caking, the soil becomes loose and open. 

 Moisture is thus readily absorbed, instead of running off down 

 the steep slopes. Severe frosts are unknown. 



As the outcrop occurs inside the amphitheatre, and some way 

 down the hill side, the aspect, facing the morning sun, and 

 sheltered from the westerly winds, is almost an ideal one. These 

 matters of aspect and rainfall are almost sutficient, in themselves, 

 to bring into existence the well-known vegetation of Sassafras, 

 Coachwood, Myrtles, Tree-ferns, etc., typical of the gullies of the 

 eastern slopes of the Kurrajong, had there been sheltered gullies. 

 But the position is too exposed, and the vegetation quite distinct. 

 It is not confined to such small gullies as there are, but climbs 

 up their sides and spreads along the hill-slopes. 



In the following list, those plants marked * are believed to 

 owe their position to the favourable conditions offered by the 

 limestone-soil. Many of these plants are admittedly found on 

 sandstone country, but they are not typical of that soil; and the 

 explanation of their presence is probably to be found in the 

 favourable local conditions. Mr. Hamilton§ shows, that at Mt. 

 Wilson, most of these plants prefer the basalt to the sandstone. 



I have to thank Messrs. J. H. Maiden and C. T. Musson for 

 assistance in the preparation of this note. 

 RANUNCULACEiE ... Clematis aristata R.Br. 



glycinoides DC. 

 MAGNOLiACEiE ...*Drimys dipetala F.v.M. 



ANONACBiE ... .. * Eupomatia laurina R.Br. 



MENisPERMACEiE . . .*Coccichis Muorei F.v.M. 



* Sarcopetalum Harveyanum F.v.M. 

 CEUciFERiE ... ... Lepidium ruderale L. 



PiTTOSPOREiE ...* Hymenosporum Jiavum F.v.M. 



Btirsaria sjnnosa Cav. 

 *Citriobatus muUi/iorus A. Cunn. 



§ Proc. Linn. Soc. N. S. Wales, 1899, p.346. 

 *Found on the limestone, tlntroduced weeds. iTlntermediate flora (p. 851.) 



