New flower species found in Knuckles
Two nature scientists, Dr Kavinda Amarasinghe and Chandika Wijeratna
have been able to identify a new variety of Binara in the Knuckles
Range, one of the World Heritage Sites. The features of this flower are
equal to the blue Binara which can be seen in the cloud forest of the
Knuckles Range. The genetic name of the Blue Binara is Exacum trinervium
Three species of Exacum have been found in Sri Lanka. These are
Exacum macranthum, Exacum walkeri and Exacum trinervium pallidum. They
are locally called as ‘Binara’ or ‘Ginihiria’ and are commonly known as
Binara. Exacum belongs to family Gentianaceae and genus Exacum.
According to these explorers, this new variety of Binara has been found
in Sri Lanka during the period between 2009 to 2010. The newly
identified white Binara from Knuckles (Exacum trinervium - Knuckles
White Binara), is very similar to the Blue Binara (Exacum trinervium
The endemic species of Binara is only found in Horton Plains and the
Hakgala Strict Nature Reserve (Exacum walkeri-Horton plains).
The endemic flower is elliptical. The colour of the flower is white.
The small flower is a remarkable feature in the Horton Plains
environment. These endemic flowers are small and single.
The Blue Binara (Exacum trinervium pallidum) is dark in colour. The
newly identified Binara and Blue Binara are different to the above
endemic species Exacum walkeri-Horton plains is larger in size than the
endemic spices. The flowering season of the new variety is between
February to May.
The flower of the subspecies of Exacum trinervium pallidum (Blue
Binara) is dark blue.
Flora of Ceylon Vol. 3, states about white flower. Flora of Ceylon
vol.3 states that it is a variety of Exacum trinervium pallidum. This
Variety is called ‘lewisii’.
Researcher Pradeep Samarawicrama also inspected this plant in the
Knuckles Range. According to these researchers, the discovery of this
new flower species is another important factor that shows the country’s