ADDITIONS TO THE MIOCENE SUCKER CREEK FLORA OF OREGON AND IDAHO

Study of plant microfossils and additional macrofossils collected from sediments in the vicinity of Sucker Creek along the Oregon-Idaho boundary has provided additional data on the composition of this fossil flora. A total of seven taxa new to the flora have been recognized. These include colonies of Botryococcus; pollen of Podocarpus, Pachysandra, and the Onagraceae; and leaves of Cephalotaxus californica and Vaccinium sophoroides. The occurrence of Podocarpus in this mid-Miocene flora is particularly significant in view of the limited number of records of this genus in the Tertiary of North America. In addition to these new records, the presence of three additional taxa—Castanea, Nyssa, and Ilex—previously recognized on the basis of leaf remains, is further substantiated by the occurrence of fossil pollen in the sediments.