The lowest forests in which the large Mindoro forest mouse has been found, at some above sea level, are mostly between in height, with the very tallest reaching . The dominant species of tree are from the genera "Leptospermum flavescens", "Tristaniopsis" and "Lithocarpus", from the families Myrtaceae and Fagaceae. These very humid forests have a dense understory vegetation, which consists, amongst other plants, of mosses, tree ferns and species of "Pandanus". At higher altitudes (between ) the forest is dominated by bamboo, while the only tree species present is "Agathis philippinensis". Here, vegetation reaches a height between . There are many smaller plants present, such as ferns, orchids and species of "Pandanus". The forest floor is covered with a layer of leaves with a thickness between .