Camillia produces small white flowers in the spring. 
Camillia is found in Sagarika.
For the elves though it is a different matter. If the leaves are picked at precisely the right moment, through a complex process they can be turned into a beverage that is said to "help them control some of the primal urges of their ancestors". The process involves leaving the leaves to dry, rolling them, fermenting them, roasting them and finally boiling them.