See that white tree there amongst the green ones? I'm not certain, but I think it's an albino.
Like animals, some tress are born as albinos, devoid of pigments due to a genetic mutation. Without photosynthetic pigments, a tree cannot harvest energy from sunlight and normally wouldn't survive. But in a rainforest, any tree will be nurtured by the rest of its community, sharing resources through their roots. Even a tree unable to give anything back.