354 A. A. HAMILTON. 



In a shallow swampy basin Calamagrostls cemula Steud., 

 a weak grass with a feathery inflorescence, is growing side 

 by side with the introduced cosmopolitan Fox-tail grass, 

 Polypogon monspeliensis Desf., a haiophilous species which 

 favours the salt-marsh and estuary. Among the dense 

 growth in the centre of the swamp, the slender stemmed 

 Pultencea denbata Labill., runs up to the light. This species 

 simulates its congener, P. ineurvata A. Cunn., which fre- 

 quents a similar situation in the swamps further inland. 



On the rocky escarpment facing the ocean, where the 

 headland commences to curve towards the entrance to 

 Port Hacking, an example of the rare Ficus Henneana 

 Miq. was noted growing in a rock crevice, and sprawling 

 outwards over the cliffs. An interesting note on this species 

 is given by the Government Botanist, Mr. J. H. Maiden in 

 his Forest Flora of New South Wales, ii, 100 (1905). 



Explanation of Plates. 



Plate VII. 



Fig. 1. A wind-torn gap in the dune embankment, Deewhy Beach. 



Fig. 2. Festuca littoralis forming horizontal ridges on the sand 

 which has been removed from the gap by the wind and 

 deposited at the rear of the embankment. 



Plate VIII. 

 Fig. 3. Festuca littoralis building a hummock of sand in the gap. 



Fig. 4. A colony of Festuca littoralis forming a series of miniature 

 mounds on the floor of the gap. 



Plate IX. 

 Fig. 5. Trailing stems of Spinifex hirsutus creeping down the 

 slope from the top of the dune embankment to join 

 Festuca littoralis, Deewhy Beach. 



Fig. 6. Trailing stems of Spinifex hirsutus binding the sand on 

 the frontal slope of the dune embankment, Maroubra 

 Bay. 



