49 



NOTES ON AUSTRALIAN MARINE ALGJE, i. 



By A. H. S. Lucas, M.A., B.Sc. 



(Plates i.-v.) 



FUCOIDE^E. 

 Turbinaria Lamour. 



T. ornata J.Ag. — Mr. C. Hedley collected several specimens of 

 Turbinaria on Murray Island, Torres St., which agree with T. 

 ornata except that the receptacles are all distinctly racemose and 

 not at all cymose. The largest measured 20 cm. in length, the 

 peltate laminae were in general 17 mm. in diameter, including the 

 teeth of the margin. A second crown of teeth was present on a 

 few of the laminae. The " leaves " were hollowed out into 

 vesicles. Stolons were borne abundantly on the lower stipes, 

 but I could not find any buds upon them. The species is widely 

 distributed over the Pacific and Indian Oceans, and throughout 

 the Malay Archipelago. On the Queensland coast it has been 

 gathered as far south as Port Denison. Mr. Hedley's form may 

 be distinguished as forma racemosa. 



Some years ago I picked up a fragment of a Turbinaria, pro- 

 babl} T of this species, which had been carried south with the 

 pumice of the northern island volcanoes, and thrown up on the 

 beach at Bronte, near Bondi. 



The branching Turbinarias found on our north coasts are T. 

 conoides Kuetz., and T. decurrens Bory, A third slender branch- 

 ing form, T. gracilis Sond., from West Australia, was figured by 

 Harvey (Phyc. Austr., P1.131). 



Of the simple forms, T. trial a ta Kuetz., recorded from \V. Aus- 

 tralia by Labillardiere, was figured by Kuetzing (Tab. Phyc. x., 

 t.69). It is not listed as Australian by Sonder, who was, how- 

 ever, acquainted with it from Fan Domingo in the West Indie.*. 

 T. ornata was already figured by Turner. 



A. and E. S. Gepp have figured T. murrayana of the latter, 

 from specimens collected in the Seychelles by J. Starkie Gardiner 



