TOPOGRAPHICAL, ECOLOGICAL, AND TAXONOMIC NOTES. 349 



on the verge of the escarpment measuring less than one- 

 third of the length of the leaves on bushes growing five 

 yards inland. Kennedy a monopliylla Vent., scrambles over 

 the boulders and among the low spreading shrubs on the 

 hillside. Preferably a trailer, it is compelled to climb in 

 search of light when growing, as occasionally happens, in 

 a dense shrubbery. 



The shrubby Petrophila pulchella R. Br., with finely 

 dissected cylindrical foliage, suitable for this dry exposed 

 station is well represented, and the prostrate Go mpholobium 

 glabratum DC, a weak, wiry-stemmed undershrub, is 

 occasional on the hillside. 



Nearing the ocean headland in an area of sandy to peaty 

 soil, from occasionally wet to permanently swampy, several 

 species find a more or less suitable habitat. Of these 

 Styphelia esquamata Spreng., is the most drought resistant, 

 frequently ascending to the dry crown of the hill. It avoids 

 shade but does not favour a hot climate. It extends south- 

 wards to Victoria, and is found on the higher slopes of the 

 Blue Mountains. Mirbelia reticulata Sm., usually a swamp 

 dweller, and normally prostrate, is here represented by a 

 few plants which have invaded a clump of Banksia ericifolia, 

 and struggled upwards through its dense foliage to the light. 



A solitary specimen of the green-flowered Callistemon 

 pinifolius DC, was noted on the hillside. This species 

 occasionally takes possession of a peaty basin among the 

 inland sandhills, but is better represented, though less 

 communal, on the Wianamatta Shale flats in the Clyde, 

 Granville, and Parramatta districts. Though edaphically 

 adaptable it has a limited range, extending northerly from 

 Port Jackson to the Hunter River, and west to the foot- 

 hills of the dividing range, ascending the Blue Mountains 

 to Glenbrook, and the southern highlands to Picton. 



The aromatic leaved Melaleuca thymifolia Sm., does not 

 venture far from the swampy area, and Sprengelia incar- 



