Taxonomy of economic seaweeds - With reference to some Pacific species (Volume IV)

In this section, the new Philippine species of Sargassum, described in English in the previous volume (and illustrated) are validated with Latin diagnoses. These 12 new species are added to the 50 or so "known" species in the large Philippine archipelago. 

Two contributions in this volume address those species with furcately branching leaves, or compressed primary branches. The first, by Ajisaka, Noro, Trono, Chiang, and Yoshida, treats the characteristics of the species statistically, thus continuing some of the earlier perspective. The second paper, by Noro, Ajisaka, and Yoshida, places five species in the synonymy of other species, all common or widespread taxa. This indicates that by whatever means, a gradual understanding of the limits of the common Sargassum species is being reached. Inasmuch as some of these species are "old" (e.g., species of C. Agardh, who was among the first to distinguish species within this group), perhaps examination of "younger" species will show that the younger species had been named one or more times previously.