313 
India, Burma, Malaya, Philippines, (not yet I’ecorded from south 
Andaman). 
RHIZOPHOREtE. 
100. Rhizophora mucronata Lamk, 
Great and Little Coco, frequent in mangrove swamps. 
Tropical shores of Africa, Asia, and N. Australia. 
101. Rhizophora conjugata Linn. 
Great Coco, common. 
Tropical shores of Asia, and Africa. 
102. Cbriops Candollbana Arn. 
Great Coco, common. 
Tropical shores of Eastern Hemisphere. 
103. Cbriops Roxburghiana Arn. 
Great Coco, not common. 
Tropical shores of Eastern Hemisphere. 
104. Bruguiera gtmnorhiza Lamk. 
In all the islands, common. This is the chief constituent of the 
mangrove jungle in the group ; it germinates very freely also along the 
sandy beaches though there it doubtless does not persist; it also ger- 
minates along the ridges of coral that are formed between the mainland 
and small outlying islets like Lascelles Island, Rat Island, Button, and 
others, and as the roots spread they help to collect the “ drift ” of the 
tides and shew how it is possible for the island to increase in size with¬ 
out postulating a general upheaval for the group. On bare rocky pro¬ 
montories on the west coast where long rocky ledges and reefs of loose 
boulders run many yards out to sea, numbers of seedlings also appear and 
though these spots are exposed to the full force of the south-west monsoon 
many of these resist the waves for at least several seasons; the only 
other constituent of the mangrove jungle that does this is Avicemiia, 
many specimens of which though dwarf and weatherbeaten are evidently 
of considerable age. Pemphis, which also greatly affects such positions 
is not partial to mangrove swamps proper at all and was never seen 
along the creeks. In the small lake on Little Coco tHe water of which 
was potable though not good almost all the constituents of a mangrove 
swamp were growing freely. 
Tropical shores of Eastern Hemisphere and Polynesia. 
COMBRETACE^. 
105. Teeminalia Catappa Linn. 
In all the islands ; one of the commonest trees on the shore and 
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