SULCARIA BADIA, A RARE LICHEN IN WESTERN NORTH-AMERICA

Sulcaria badia, a rare lichen endemic to western North America, had no t been collected since 1971 despite more than two decades of active fi eld work in the area of the type location. A search was undertaken to determine the current range of the species. Sulcaria badia was found o n hardwood trees, mainly Quercus garryana, up to 60 km inland, and in hypermaritime Pinus contorta var. contorta forests. We found four grou ps of sites in northern California and Oregon. Sulcaria badia appears to be extirpated from the Washington site. Most sites are in danger du e to pollution and tree removal from human settlement. Sulcaria badia was accepted to the world red-list of lichens with the status ''critic ally endangered.''