By Anna Horsbrugh-Porter
BBC correspondent in Colombo
Sri Lanka's Tamil Tiger rebels have adopted a poisonous lily as their official flower.
The lily has the same colours as the Tiger flag
They are urging people in the north and east of the island - the Tamil Tiger stronghold - to grow the flower in their homes.
They want people to wear the karthigaipoo, or gloriosa lily, on occasions of national significance.
The Tigers have fought a near 30-year campaign for Tamil self-determination in the north and east of the island.
The gloriosa is a yellow and red flower with tendril-like petals, which blooms mainly in the rebel-held areas.
Its colours are the same as those of the Tamil Tiger flag - which has a picture of a roaring tiger in front of a crossed pair of rifles encircled by a round of bullets.
This particular lily also shares another characteristic with the Tamil Tiger fighters - it is deadly poisonous and eating any part of the flower, vine or root can cause death.
It is used by those wishing to commit suicide.
Many Tamil Tiger fighters wear a cyanide capsule around their neck to avoid being captured alive by the Sri Lankan army.
TamilNet, the pro-rebel website, says the organisation wants residents of the north and east to grow what it is calling its national flower in homes, business premises and educational institutions.