Abstract
An investigation into the Flora of the Polonnaruwa District (southern part*) has revealed the existence of additional taxa in the Flora of Ceylon (Sri Lanka). These include a new species of Rbinacambus Nees, two new species records for the country, and a distributional record for the dry low country (inclusive of Polonnaruwa District) in Cambium puberulum Thwaites ex Hook f., a rare endemic species of the Rubiaceae, hitherto 1q)own only from the Central Province. Ecology notes provide additianal data to specific descriptions of specimens encountered in the field. Respective illustrations of the species described are provided.
Highlights
In the course of a floristic survey of the flora df the Polonnaruwa Distrist the occurrence of some angiosperm species, unusual forCe,flon, was observed for the first time
Subsequent investigations proved these to include a new species of Rhinacanthus (Acanthaceae), two.new species records for Ceylon, and a distributional record of an endemic species (Rubiaceae) for the dry low country hitherto not recognized
The flora of Ceylon (Sri Lanka) is still not completely documented, certain areas in the country being 'not yet fully investigated floristically. The present contributionsto this flora, fr0m.a monitoring of the plants of the Polonnaruwa District, one such unexplored area, fill: some lacunae still left in the complete documentation' of this flora
Summary
In the course of a floristic survey of the flora df the Polonnaruwa Distrist (southern part*) the occurrence of some angiosperm species, unusual for. Subsequent investigations proved these to include a new species of Rhinacanthus (Acanthaceae), two.new species records for Ceylon, and a distributional record of an endemic species (Rubiaceae) for the dry low country (inclusive of the district) hitherto not recognized
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