The reserve is mostly forested. The predominant forest type is Chilean Coast Range mountain forest, also known as
Maulino forest (
bosque caducifolio Maulino) or the
Nothofagus glauca–
Azara petiolaris association. Maulino forest is a forest community at the transition between the humid
Valdivian temperate forests of south-central Chile and the Mediterranean-climate
Chilean matorral of central Chile. The reserve is rich in woody plants, with about 80 reported tree and shrub species. Dominant trees include several winter-deciduous species of
Nothofagus or southern beech, including
Nothofagus dombeyi, N. glauca,
N. × leoni, and
N. alessandrii. Other dominant trees include
Luma apiculata, Podocarpus salignus, Lithraea caustica,
boldo (
Peumus boldus), and
Quillaja saponaria. The reserve is home to 72 species of mosses, including several Valdivian and Patagonian species at their northern distribution limit. The reserve is surrounded by plantations of
radiata pine (
Pinus radiata), an introduced species that has replaced most of the coastal forest. ==Facilities==