512 ECOLOGICAL STUDY OF SALTMARSH VEGETATION. 



Plate xx. 

 Fig. 7. — Salicornia australis encircling a Ruppia pool on the salt plain 



at Homebush Bay. 

 Fig. 8. — Tuft of Salicornia bordering a detritus mound crowned with 

 Salt-grass on a salt plain at Cook's River. 



Plate xxi. 

 Fig. 9. — Ruppia maritima L. lying on the mud at low tide. Band of 

 Triglochin striata lining the bank of the channel, Cook's River. 

 Fig.lO. — Dense growth of Ruppia maritima awash at high tide, Cook's 

 River near Tempe. 



Plate xxii. 

 Fig. 11. — Artificial environment created by the formation of a dyke at 

 Homebush Bay permits encroachment by Seablite (Suae da mari- 

 tima). 

 Fig. 12. — Pure culture of Seablite at Homebush Bay. Debilitated man- 

 groves in foreground. 



Plate xxiii. 

 Fig. 13. — Intermingled patches of Salicornia and Seablite clothing the 

 u j Lain at Homebush Bay. Suncracked surface in the fore- 

 _ i md. 

 Fig. 14. — Stretch of barren salt -encrusted plain at Cook's River. 

 [uncus maritipius on margin. 



Plate xxi v. 



Fig.15.— Meadow of Cotula coronopifolia (inundated) bordering a. 



Thatch-reed formation at Undercliffe, Cook's River, /uncus 



maritimus in foreground. 



Fig. 16.— Dense sward of Salicornia in tidal zone breaking up into mats 



in an attempt to invade the dry salt plain at Cook's River. 



Plate xxv. 

 Fig. 17. — Band of Thatch-reed ( Phragmites communis) bisected by a 

 Land of Scirpus liitoralis on the bank of Cook's River at Under- 

 cliffe. 

 Fig. 18. — Weak growth of Thatch-reed invaded by Triglochin striata. 

 Salt plain, Undercliffe. 



Plate xxvi. 

 Fig. 19. — Forest of Swamp Oak (Casuarina glauca) with undergrowth 

 of T< a-trees (Melaleuca sppj at Bray's Bay, Parramatta River. 

 Fig.20.— Stranded Mangroves (Avicennia officinalis) invaded by a 

 grass and ruderal pasture. Cook's River. 



Plate xxvii. 

 Fig. 21. — Wilson ia Backhousii Hook. f. Stems elongating and rooting 



pari passu with the silt deposit. 

 Fig. 22. — Seablite (Suaeda maritima Dumort). Lateral roots spreading 

 horizontally on the marsh mud. 



