Douglas-fir (Pseudotsuga menziesii)/mixed evergreen forests at Point Reyes National Seashore are found primarily along the southern section of Inverness Ridge (see Vegetation Map). They are found on marine derived sedimentary soils and also experience the coastal influence in the form of summer fog. This forest type is found from southern Oregon to southern California and is typified across its range by the dominance of broad-leaved sclerophyllous species with little to significant coniferous presence. At Point Reyes, the coniferous influence is significant and most mixed evergreen forests in the Seashore are dominated by Douglas-fir. This vegetation type comprises over 30,000 acres of the Seashore.