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Tristicha hypnoides Sprague N.W.Africa Mr Barter 
29. perniola zeylanica var. longifolia Showing form and branching of 
Thallus. Leaves at growing points and in rosettes on upper surface 
and fruits on older portion. Ceylon 89 .1899 J.C.Willis. 
30. Terraola zeylanica Tul. Dead plant as found after the fruit is ripe. 
(Exposed to air) from rocks in bed of Mahaweliganga, Ceylon 89.1899 
J.C. Willis. 
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+ picture of Podostemon ceratophyllum Michx. 
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