Nick Garbutt / Flower of locally endemic Rafflesia (Rafflesia tengku-adlinii) flower diameter 22cm blooming on forest floor within lowland Dipterocarp rainforest, Maliau Basin, Sabah's 'Lost World', Borneo

Jouan & Rius / Rafflesia flower (Rafflesia keithii) in Gunung Gading NP, Borneo, Sarawak, Malaysia

Jouan & Rius / Rafflesia flower (Rafflesia keithii) in Gunung Gading NP, Borneo, Sarawak, Malaysia

Edwin Giesbers / Rafflesia (Rafflesia keithii) the worlds largest known flower, Gunung Gading National Park, Sarawak, Borneo, Malaysia

Ingo Arndt / Rafflesia (Rafflesia arnoldii) flower, is the largest flower in the world, fresh open first day, highlands, Malaysian Peninsula

NEIL NIGHTINGALE / Rafflesia flower, Borneo

Nick Garbutt / Rafflesia (Rafflesia keithii) flower aged approximately 3 days on rainforest floor. Lower slopes of Mt Kinabalu, Sabah, Borneo, Malaysia.

Nick Garbutt / Rafflesia (Rafflesia keithii) flower aged approximately 3 days, on rainforest floor. Lower slopes of Mt Kinabalu, Sabah, Borneo, Malaysia.

Ch'ien Lee / Rafflesia (Rafflesia keithii) flower, Poring Hotsprings, Sabah, Borneo, Malaysia

Alex Hyde / Giant flower buds (Rafflesia tengku-adlinii) Maliau Basin, Borneo.

Adrian Davies / Liana (Tetrastigma sp) on which Rafflesia grows parasitically, Sabah, Borneo.

Adrian Davies / Sign for Rafflesia 'garden', Sabah, Borneo. September 2015.