Plate XII. 



P'iG. £7. — Map of Orcharo Island. 



1. Xelumbo society. 



2. Polygonum-Xelitmbo society, 



3. Polygonum-Xelrmbo-Typha society, 



4. Polygonum-Typha-Bidens society, 

 b. Hibiscus-Typha society, 

 C. Shrulj society. 



LEGEND OF PLANT SOCIETIES. 



7. Forest society, 



8. Hibiscus society, 

 n. Polygonum- Scirpus society, 



10. Sedge society, 



11. Beach without ve'etation. 



