A. Thell et T. Goward, THE NEW CETRARIOID GENUS KAERNEFELTIA AND RELATED GROUPS IN THE PARMELIACEAE (LICHENIZED ASCOMYCOTINA), The Bryologist, 99(2), 1996, pp. 125-136
The new cetrarioid genus, Kaernefeltia Thell & Goward is described to
accommodate Cetraria californica and C. merrillii, both of which are c
haracterized by small, broadly clavate asci, slightly capitate paraphy
ses, disc-bar-shaped pycnoconidia and several distinctive fatty acids.