Nov., 1910.] A Floristic Survey of Orchard Island. 
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forming at the outer margin of the zone as dense a growth as the 
Nelumbo. Towards the inner margin the Nelumbo is 2 feet tall 
and fruiting freely. 
A short distance west of the belt studied the Polygonum has 
entirely outdistanced the Nelumbo, replacing society one with 
a Polygonum zone external to a mixed Polygonum-Nelumbo zone. 
Fig. 2. View farther west than Fig. 1. Polygonum emersum forms 
the outermost zone, then follow zones or societies 2, 3, 4 , 5, 6 and 7 of 
map. 
Of the secondary species Brachythecium rivulare is the most 
abundant, especially on the exposed mud surface, quite large 
patches of which are covered by a pure growth of the moss. The 
Riccias are also conspicuous members of the ground cover. The 
herbs are very sparse. 
Towards the west of the median line of the belt is 
3. A Polygonum-Nelumbo-Typha society. 
Facies. 
Polygonum emersum. Typha latifolia. 
Nelumbo lutea. 
