Triplet Falls are nestled amongst the ancient forests of Mountain Ash and Myrtle Beech. Pockets of the park feature cool temperate rainforest, including Myrtle Beech Nothofagus cunninghamii. Sheltered areas also have Leatherwood and Myrtle Beech. It is a specific parasite of myrtle beech ("Nothofagus cunninghamii") trees. There are several undescribed species in the forests of Myrtle beech ("Nothofagus cunninghamii") in Tasmania. Stands of myrtle beech ("Nothofagus cunninghamii") exist in the Tarkine Forest. The reference is to the fungal pathogen, "Chalara australis" that affects myrtle beech. The town was named after the many myrtle beech trees of the area. It grows on myrtle beech ("Nothofagus cunninghammii") and snow gums. Significant species include Myrtle Beech, Leatherwood, Southern Sassafras and Messmate. Nothofagus cunninghamii, the myrtle beech, is an evergreen tree native to Tasmania and Victoria, Australia. Myrtle beech forests cannot survive strong fire, and must re-establish from neighbouring areas.