Petelka 1943. June 11 2 mi. S.E. Beegum, 1650 ft., Tehama Co., Calif. grassland and agricultural land into the oak woodland. The vegetation along our route for some distance, beyond Red Bluff, with only occasional shrubs was simply scattered oaks over grassy slopes and flats. (We followed the south fork Dry Creek for slightly less than half the distance between Red Bluff and Beegum. Dry Creek is a tributary of Cottonwood Creek, which drains into the Sacramento River.) At about 800 feet elevation, digger pines (Pinus sabiniana) appeared mixed in with the oaks and shrubs, chiefly manzanita, also appeared as important parts of the vegetation. At an elevation of about 1200 ft., firs/junipers (Juniperus californica) were observed regularly, but only for several miles. Also at this approxi- mate elevation; low chaparral, almost totally Adenostoma, appeared in patches and became more extensive as we progressed upwards. Our first comp site is situated in the blue oak-digger pine-manzanita complex mentioned earlier. Trees and shrubs are spaced over grassy slopes. With the steeper and higher slopes, this woodland