During late July and early August, 1926, the Kaniksu National Forest in northern Idaho experienced its most severe fire damage since the advent of the white man in that region. About 125,000 acres were burned as a result of the conflagrations. The destroyed forests consisted largely of western white pine (Pinus mionticola), western larch (Larix occidentalis), Douglas fir (Pseudotsuga taxifolia), lowland white fir (Abies grandis), western red cedar (Thuja plicata), and western hemlock (Tsuga heterophylla). The ground cover, typical of the western white pine type, had as key species Linnea borealis, Coptis occidentalis, Tiarella unifoliata, Viola blanda, and Pachystima myrsinites. Following the burn these were supplanted by Chantacierion angusttifolium, Marchantia polymorpha, Funaria hygrometrica, Rubus parviflora, and Spiraea densiflora.