caa a22 4500 37890230X CHVBK 20180305123521.0 cr unu---uuuuu 161128e20041201xx s 000 0 eng 10.1515/BOT.2004.067 doi (NATIONALLICENCE)gruyter-10.1515/BOT.2004.067 Vegetative and reproductive morphology of Sargassum orotavicum sp. nov. (Fucales, Phaeophyceae) from the Canary Islands (eastern Atlantic Ocean) [Elektronische Daten] [Tania Díaz-Villa, Julio Afonso-Carrillo, Marta Sansón] A population of seaweeds from the Canary Islands successively reported as Sargassum diversifolium, S. vulgare f. diversifolium, or S. vulgare was examined monthly at the climax of vegetative and reproductive stage development to evaluate morphological taxonomic features. The primary and secondary blades are morphologically different (primary blades are spirally twisted and sinuous with serrate to nearly entire margins, whereas secondary blades are thinner with entire to slightly dentate-serrate margins); the vesicles are subspherical to slightly oblong, muticous or ending in a mucro or in a coronal blade; and the receptacles are furnished with spines. These characters are not applicable to Sargassum diversifolium, or to an infraspecific taxon of Sargassum vulgare or S. furcatum as previously suggested, and consequently, Sargassum orotavicum sp. nov. is described. Nomenclatural problems related to the name diversifolium and the affinities of the species involved are presented. According to their morphological characters, S. orotavicum, S. vulgare and S. furcatum belong to the subgenus Sargassum. However, S. vulgare and S. furcatum constitute genuine species of the subsection Cymosae of the section Malacocarpicae, whereas S. orotavicum appears related to species of the subsection Biserrulae of the section Acanthocarpicae. ©2004 by Walter de Gruyter Berlin New York Hydrobiology nationallicence Mycology, fungi nationallicence Botany & plant sciences nationallicence Canary Islands nationallicence Fucales nationallicence macroalgae nationallicence Sargassum orotavicum nationallicence taxonomy nationallicence Díaz-Villa Tania Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain aut Afonso-Carrillo Julio Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain aut Sansón Marta Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain aut Botanica Marina Walter de Gruyter 47/6(2004-12-01), 471-480 0006-8055 47:6<471 2004 47 botm https://doi.org/10.1515/BOT.2004.067 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/BOT.2004.067 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Díaz-Villa Tania Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain aut NATIONALLICENCE 700 1- Afonso-Carrillo Julio Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain aut NATIONALLICENCE 700 1- Sansón Marta Departamento de Biología Vegetal (Botánica), Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain aut NATIONALLICENCE 773 0- Botanica Marina Walter de Gruyter 47/6(2004-12-01), 471-480 0006-8055 47:6<471 2004 47 botm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter