The Rujada flora of west central Oregon

The original description of the Oligocene fossil flora found 20 miles east of Cottage Grove Oregon (main site.) First and oldest description of Pseudotsuga in North America (?) Also described are Exbucklandia oregonensis, Cunninghamia chaneyi, and Keteleeria rujadana. Nice black and white plates of most of the species described. A must have for those interested in Oligocene flora assemblages. A.V.