There are a huge number of lichen species in rainforests, far outnumbering flowering plants. The lichen are mostly epiphytes, living on trees. A single site in Costa Rica yielded about 300 species of lichen on leaves, in the understory of the rain forest; a single fallen "Elaeocarpus" tree in New Guinea held 173 species; the evergreen laurel "Ocotea atirrensis" was found with 50–80 lichen species on a "single leaf".