A descriptive plant survey was conducted of Golden and Silver Falls State Natural Area in the Coast Range northeast of Coos Bay in Coos County, Oregon, during 1988, 1990, and 1997. The 63.6 ha natural area was established in 1936 to preserve an old-growth stand of Pseudotsuga menziesii surrounding the area of two scenic waterfalls. Vascular flora consisted of 241 specific and infraspecific taxa in 162 genera from 61 families, of which 70 taxa (29 %) were exotics. The five plant habitats were steep coniferous mountain slopes (Pseudotsuga menziesii-Tsuga heterophylla/Acer circinatum/Polystichum munitum association) and (Pseudotsuga menziesii-Tsuga heterophylla/Gaultheria shallon/Polystichum munitum association), sandstone cliff escarpments, lowland valley hardwoods (Acer macrophyllum-Umbellularia californica/Polystichum munitum association), ruderal, and riparian floodplain (Alnus rubra/Rubus spectabilis/Oxalis oregana association).