RT info:eu-repo/semantics/article T1 New records of benthic marine algae from the Canary Islands (eastern Atlantic Ocean): morphology, taxonomy and distribution A1 Afonso Carrillo, Julio A1 Sansón Acedo, Marta A1 Sangil, Carlos A1 Díaz Villa, Tania A2 BotánicaEcología y Fisiología Vegetal A2 Botánica Marina AB Four species of marine algae are reported from the Canary Islands for the first time. Our report of the westernAtlantic Gelidiella setacea (Gelidiales, Rhodophyta) is thefirst from the eastern Atlantic Ocean. Pseudotetrasporamarina (Tetrasporales, Chlorophyta) previously known onthe eastern side of the Atlantic Ocean from temperatesaltmarshes only, is now reported growing in the shallowsublittoral zone, the habitat in which tropical westernAtlantic populations also occur. The presence of Lomentaria chylocladiella (Rhodymeniales, Rhodophyta) represents the first report in the Atlantic Ocean of a speciespreviously thought to be endemic to the MediterraneanSea. The record of the widely distributed Acrochaetiumhallandicum (Acrochaetiales, Rhodophyta) was not unexpected. Specimens of A. hallandicum have vegetativecells with a single lobate parietal chloroplast with a singlepyrenoid, a feature that among acrochaetioid algaeoccurs exclusive in the genus Colaconema (Colaconematales), and consequently the species is transferred tothis genus. Fertile sporophytes are described for Gelidiella setacea, a species previously known only in its vegetative condition. Cruciately to irregularly dividedsporangia are regularly arranged in transverse rows in stichidia laterally formed on the axes. The species is transferred to the genus Parviphycus on the basis of themorphology of the stichidia and the distichous pattern ofapical division exhibited by the axes, both exclusive features of this genus. YR 2007 FD 2007 LK http://riull.ull.es/xmlui/handle/915/27435 UL http://riull.ull.es/xmlui/handle/915/27435 LA en DS Repositorio institucional de la Universidad de La Laguna RD 07-oct-2024