76 



of the muddy coast and sestuaries subject to the regular flow of the 

 tides, producing more frequently a narrow-leaved variety on the 

 tropical shores and a broad-leaved form in the extratropical latitudes, 

 the former variety having sometimes the leaves narrow-lanceolate 

 and long-acuminate, the length exceeding many times the width. 

 It occurs as far south as Wilson's Promontory, and wiU. therefore 

 probably yet be met with on the north-coast of Tasmania. 



Jacquin's A. tomentosa of the western hemisphere, Selectar. 

 Stirpium Americ. Histor. 178, t. 112, fig. 2 (1763); Linne, Gen. 

 Plant, edit. Vienn. 579 (1767) ; Murray, Syst. Veget. 484 (1774) ; 

 Humboldt, Bonpl. & Kunth, Nov. Gen. et Spec. Plant, ii. 283, is 

 regarded by Schauer as distinct from Linn^'s A. officinalis. Blume 

 (Bijdragen tot de Flora van Nederlandsk Indie, p. 821), Wight 

 (Icon. Plant. Ind. Orient, iv. num. et tab. 1481 & 1482) and Miquel 

 (Flor. Ind. Batav. ii. 912), distinguish a second Asiatic species as A 

 alba, whilst E. Brown unites the West African A. Africana (Beau- 

 vois, Flore d'Oware, i. 79, t. 47) and Walpers (Repert. Bot. Syst. iv. 

 131) in addition to this the genuine American A. tomentosa with our 

 plant. In Schreber's edition of Linnd's Materia Medica, 158, the 

 Asiatic and American plants are also combined as A. tomentosa. 

 Lamark's principal figure (Encycl. Mdthodiq. t. 540), quoted by 

 Walpers, is evidently not referable to our plant. The figures in the 

 works of Rheede (Hort. Malabar, iv. t. 45) and of Rumpf (Herbar. 

 Amboinens. iii. t. 76) are sufficiently expressive of the Australian 

 species. 



Linnd (Flor. Zeilan. 23), Willdenow (Spec. Plant, iii. 395) and 

 also Schauer and Walpers have offered respectively a detailed syno- 

 nymy of this and congeneric plants. 



Eurybia Traversii in a flowerless state bears considerable resem- 

 blance to Avicennia officinalis. 



