University of Isfahan Taxonomy and Biosystematics 3115-9001 5 17 2013 12 22 Revision of the Sargassum species (Sagassaceae, Phaeophycaeae) from Acanthocarpicae and Malacocarpicae sections in Iranian southern coasts بررسی گونه‌های Sargassum از بخشه‌های Acanthocarpiceae و Malacocarpicae Sargassaceae) و (Phaeophyceae در سواحل جنوبی ایران 45 54 17496 EN Masoumeh Shams Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran Saeed Afsharzadeh Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran Gholamreza Balali Dehkordi Department of Biology, Faculty of Sciences, University of Isfahan, Isfahan, Iran Journal Article 2016 06 14 <em>Sargassum</em> C. Agardh (Sagassaceae, Phaeophycaeae) is a brown algae in the Iranian southern coasts which they showed high density along the subtidal zone of area. In this study, the features of four species of Acanthocarpicae (<em>S. crassifolium</em> J. Agardh and<em> S. oligocystum</em> Montagne) and Malacocarpicae (<em>S. baccularia </em>(Mertens) C. Agardh,<em> S. henslowianum </em>C. Agardh)were described<em>. </em>Species within the Malacocarpicae section were typified by having smooth receptacles, whereas those in the Acanthocarpicae section had spiny receptacles. Also, presence of discoid to conical holdfast, elongated to lanceolate leavesand with wavy to denticulate margin were the main characters of these sections. <em>S. baccularia </em>was characterized by less sping branches compared to other species<em>. S. crassifolium </em>and<em> S. oligocystum </em>had flattened primary branches, their leaves mostly wavy or denticulate at margins, with leaf-like mucronate at vesicles apex and racemose to paniculate receptacles. https://tbj.ui.ac.ir/article_17496_99587750af204053eee9206a363d8c7e.pdf