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a family of brown algae of the order Fu-cales. The bushy thallus is about 1–2 m long; sometimes it reaches a length of 10 m. The base and trunk are often perennial. The branches are annual and grow out of the axils of leaflike blades. Each oogonium has one egg cell, which after emergence to the outside remains attached to the maternal plant by a mucous stalk until fertilization and development of a multicellular growth.

The six genera embrace more than 150 species, most of which belong to the genus Sargassum. The algae grow near shore on the bottom of warm seas. Large floating masses of Sargassa-ceae, which have become detached from the substrate and have reproduced vegetatively, are present in the Sargasso Sea—a region in the western part of the Atlantic Ocean. Seven species of the genus Sargassum are found in the USSR, in the Sea of Japan, off southern Sakhalin, and off the southern Kuril Islands. One species of the genus Coccophorus is found in the southern part of Primor’e Krai.

Sargassaceae are used to obtain alginates; in Southeast Asia some species are used as food.

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TABLE 1 Taxonomy of the new records found in the southern Caribbean of Costa Rica Phylum Orden Family Chlorophyta Cladophorales Anadyomenaceae Bryopsidales Dichotomosiphonaceae Udoteaceae Ochrophyta Fucales Sargassaceae Rhodophyta Ceramiales Delesseriaceae Nemastomatales Nemastomataceae Family Species Anadyomenaceae Microdictyon curtissiae W.
The cluster pattern (Figure 3) contained three major groups: (1) the first group consisting of Bacteria superkingdom, Phaeophyceae class, Fucales order, Sargassaceae family, and Sargassum genus; (2) the second group consisting of Viridiplantae kingdom, Streptophyta phylum, Malpighiales class, and Rhizophoraceae family; (3) the third group comprising three levels of Holothuroidea class, Aspidochirotida order, and Holothuria genus at the same branch.
Sargassum (Sargassaceae, Fucales) is a genus of brown seaweed that is found in the ocean.
Agardh (Sargassaceae) (Ochrophyta) has been recognized (Rodrigues et al., 2011; Rodrigues et al., 2012; Dore et al., 2013; Mendes et al., 2014; Rivanor et al., 2014; Shao, Pei, Fang, & Sun, 2014; Sujatha, Singh, Vohra, Kumar, & Sunitha, 2015).
The study on antiproliferative activity of crude extracts of ten Phaeophyta species isolated from Brittany coasts against three human cancers, human leukaemic T cell lymphoblast (Jurkat), human Burkitt's lymphoma (Daudi), and human chronic myelogenous leukaemia (K562) cells, showed strong antitumor potential of Sargassaceae species, Dictyota dichotoma, and Desmarestia ligulata [15].
(Sargassaceae) as feed for sheep in tropical and subtropical regions.
Colpomenia sinuosa (Mertens ex Roth) C2 Derbes et Solier Orden Fucales Sargassaceae 46.
The perennial Laminariales beds, consisting of Eisenia bicyclis and Ecklonia spp., had disappeared by 2003, shifting mostly to Sargassaceae (Sargassum macrocarpum) beds.