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dc.contributor.authorAfonso Carrillo, Julio 
dc.contributor.authorSansón Acedo, Marta 
dc.contributor.authorReyes, J.
dc.contributor.otherBotánica, Ecología y Fisiología Vegetal
dc.contributor.otherBotánicaMarina
dc.date.accessioned2022-03-17T16:25:55Z
dc.date.available2022-03-17T16:25:55Z
dc.date.issued2002
dc.identifier.urihttp://riull.ull.es/xmlui/handle/915/26748
dc.description.abstractA deep-water species of Dudresnaya, D. multiramosa Afonso-Carrillo, Sansón et Reyes sp. nov., is described from the Canary Islands. Gametophytes are terete and radially branched up to six orders, young branches are annulate but become non-annulate at maturity, hexagonal crystals are lacking in axial cells, rhizoids reach 60 um in diameter, inner cells of cortical fascicles are tri- to pentachotomously branched, and outer cortical cells are ellipsoid / moniliform. Spermatangia are borne singly or in pairs on terminal or subterminal cortical cells of monoecious gametophytes. Carpogonial and auxiliary-cell fila ments lack a thick mucilage coat, vegetative laterals or rhizoids. Generative auxiliary cells are smaller and distinguishable by shape from adjacent cells of the auxiliary-cell filament prior to diploidization. Cystocarps consist of up to 12 rounded gonimolobes and are dis tinctly cleft around the auxiliary-cell filament. Tetrasporophytes are unknown. The new species is mainly distinguished by the cell shapes and pattern of branching of the cortical fascicles and by the multilobed cystocarps. It differs from all other Dudresnaya species by its autapomorphic characters. The western Atlantic D. bermudensis Setchell, D. georgiana Searles and D. puertoricensis Searles et Ballantine, the Hawaiian D. littleri Abbott and the eastern Pacific D. colombiana Taylor are postulated to be most closely related to D. multi-ramosa as these are the only other members to display moniliform cortical fascicles among the seventeen described species of the genus.en
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.relation.ispartofseriesCryptogamie, Algol., 2002, 23(1)
dc.rightsLicencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 internacional)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es_ES
dc.titleA new species of Dudresnaya (Dumontiaceae, Rhodophyta) from the Canary Islands.en
dc.typeinfo:eu-repo/semantics/article


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