Systematics of Pterocladia media from California

Abstract

The finding of unilocular cystocarps on herbarium specimens of Gelidium crinale var. luxurians from California requires thai the plains be referred to the genus Pterocladia. Pterocladia media Dawson (1958) is expanded for this purpose. Gelidium sinicola Gardner (1927) may possibly also belong here. Additional collections of this Pterocladia species are noted.