Dansk Botanisk Arkiv, Bo. 2, No. 8. 



Plate I 





1 



; •"' "'" ' 



4 



tai . 



Fig. 1. Mangrove of Avicennia officinalis, at Derby; low water, the sea 

 has retired entirely from the mangrove. (7. Nov. 1914). Photo, by C. H. O. 



-•fc-*.«. 



'*• •■-, .- -■ - 



Fig. 2. Mangrove at Port Hedland; high water time, Avicennia's 



standing in water until the crown. Note: the steamer lying behind the 



jetty is high on the water. (3. Nov. 1914). Photo, by C. H. O. 



Fig. 3. Mangrove at Port Hedland; low water time, Avicennia's 



free from water. Note: the steamer has sunk behind the jetty. (3. Nov. 



1914, taken from the same spot as fig. 36, but 6 hours later). 



Photo by C. H. O. 



