I always thought that the Sapria himalayana found in Kaeng Krachan National Park only "flowered" in winter (December-January) but I have been proved wrong again. I found this specimen "flowering" (is that what you call it?) last week (last week of April) in KK whilst doing some off piste clambering.
For those who have not come across this plant before - its strange in that it is a total root parasite - a parasitic plant that depends solely on another plants by obtaining nourishment from them. Total root parasites have houstoria that use to suck nutrients from the roots of other plants. The Kaeng Krachan Sapria himalayana is related to the more famous Rafflesia.