An Account of the Species of the Red Alga Herposiphonia Occurring in the Central and Western Tropical Pacific Ocean

Abstract

Fourteen species of the genus Herposiphonia are described. The following species and varieties are new: H. armata, H. crassa, H. delicatula, H. dendroidea, H. dendroidea var. minor, H. dubia, H. nuda, H. obscura, H. parca var. interrupta, H. pacifica, H. trichia, H. variabilis. The distributional range is extended for H. parca, H. subdisticha, and H. tenella. H. secunda is reduced to a form of H. tenella. Emphasis is given to the nature and arrangement of trichoblasts and of sexual reproductive structures as features of taxonomic importance.