U.S.A., California, Del Norte, Big Flat Station, S. Fork of the Smith River & intersect. 427 & 15N38.
Note from Sydowia paper: A tanoak forest stand of almost pure Lithocarpus densiflora was examined near the intersection of Road 427 and the road to Buck Creek Campground. Mostly bare soil covered with leaf litter. Basic soil with serpentine parent materials on some sites.