A PRELIMINARY SYNOPSIS OF THE SPECIES OF CLADONIA IN CALIFORNIA AND ADJACENT OREGON

Continuing studies in the Cladonia flora of the western United States have yielded a number of new and hitherto unreported taxa, which are introduced in this paper. Cladonia firma is reported for the first time for North America. Cladonia humilis var. bourgeanica and C. cfr. merochlorophaea are reported as new to California. Cladonia pulvinella, an esorediate species with pillow-like granules on the podetia, containing both atranorin and bourgeanic acid in addition to fumarprotocetraric acid, is described as new. A diagnostic key and a synoptic key to the 32 known taxa of Cladonia in California and adjacent Oregon are provided.