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Tuesday, June 30, 2015

Siam weed/Devil weed/Common floss flower (Chromolaena odorata [Eupatorium odoratum])

An introduced large herb native to tropical South America. It was first introduced an ornamental at Peradeniya botanical garden in 1884 where it subsequently dead out. When it was next introduced is not recorded but during 1937-1947 it became naturalized in Balangoda  Ratnapura area and spread rapidly up to extend that it was considered as a dangerous weed in 1944. It is now listed as an invasive which is very common along roadsides, waste grounds and forest clearings at lower elevations. Flowering from January to July. 

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