Dayananda Gamage

University of Ruhuna · Botany

Exacum trinervium (Gentianaceae) in Sri Lanka received a lot of attention in recent years because of its endemism, national conservation status and medicinal & ornamental values. Therefore several groups of scientists in Sri Lanka have attempted to introduce E. trinervium as an ornamental plant through ex-situ cultivation. However, the production o...

This research was carried out as a preliminary study to determine the effects of soil substrate characteristics on aquatic plant distribution in a selected stream. Aquatic plant distribution and diversity was estimated using the quadrate method along the six sampling sites of Nannikithaela in Kanneliya forest reserve. Water quality parameters (Wate...

Dipterocarpoideae, the largest sub-family of well-known plant family Dipterocarpaceae, dominates in South Asian rain forests. Although several previous studies addressed the phylogeny of the Dipterocarpaceae family, relationships among many of its genera from the Dipterocarpoideae sub-family are still not well understood. In particular, little is k...

The Dipterocarpaceae, a well-known tropical tree family of Asian rainforests, is the most dominant component of Sri Lankan rainforests. The origin of Sri Lankan Dipterocarpaceae and their relationship with other Asian members of the family are still unknown. We studied this relationship using chloroplast DNA nucleotide sequences. DNA sequences of t...