87 



Alisma Plantago — Linne'. 

 Hab. Marshy places, rivers, 

 FL 

 " Great water plantain." 



HYDROCHARIDE^i, JFSSIEU. 



f Damasonium ovalifolium — R. Brown, Prod., p. 200. 

 ( Ottelia ovalifolia — Lindley. 

 Hab. On the Yarra and lagoons. 

 FL January. 



This elegant water-plant will easily be detected by its large potamogeton- 

 like leaves floating on the water, on long petioles. The flowers are white, 

 crimson at the base, and appear jnst above the surface. The stem i& 

 round, but in some specimens we have observed it triangular. 



LEMNACE^, LINK. 



Lemna minor — Linne. 

 Hab. Lagoons, common. 

 FL 



Lemna trisulca — Linne. 



Hab. Lagoon at Leura near Belfast. 



FL 



(A species of Physa^ is commonly found on this duckweed.) 



TYMPHACEJE, JUSSIEU. 



Typha Shuttleworthii — Koch and Sonder. 

 Hab. Lagoons. 

 Fl. December. 

 "Cat's tail," or "bulrush," 



