RT info:eu-repo/semantics/article
T1 Dudresnaya abbottiae sp. nov. (Dumontiaceae) a new gelatinous ephemeral spring-annual red alga from the Canary Islands
A1 Afonso Carrillo, Julio
A1 Tabares, Nieves
A2 BotánicaEcología y Fisiología Vegetal
A2 Botánica Marina
AB The marine red alga Dudresnaya abbottiae Afonso-Carrillo et Tabares sp. nov.from the Canary Islands is described. The new species has no single unique feature, but differs from the other Dudresnaya species by a distinctive combination of attributes.Gametophytes are radially branched with terete, nonannulate young branches, crystallineinclusions are lacking in axial cells, outer cortical cells are cylindrical, and rhizoidal filaments cut off from proximal cells of the cortical filaments reach 20 µm in diameter, regularly giving rise to terminal adventitious cortical fascicles. Spermatangial mother cells occurin paniculate clusters on outer cortical cells. Carpogonial and auxiliary-cell filaments lack athick mucilage coat, generative auxiliary cells are distinguishable from adjacent cells beforecontact with a connecting filament, cystocarps are loosely constructed, and carposporangiacompletely surround the auxiliary-cell filament. The most closely related species toDudresnaya abbottiae appear to be D. babbittiana Abbott et McDermid from the NorthCentral Pacific, D. capricornica Robins et Kraft from Australia and the Arabian Sea,D. kuroshioensis Kajimura from Japan and D. canariensis Tabares, Afonso-Carrillo, Sansónet Reyes from the Canary Islands. Although all these species show important similarities inoverall habit and shape of outer cortical cells, the arrangement of spermatangial mothercells and the morphology of rhizoids, generative auxiliary cells and cystocarps distinguishthem. A synoptic key to the nineteen species currently included in the genus Dudresnayais given.
YR 2004
FD 2004
LK http://riull.ull.es/xmlui/handle/915/26746
UL http://riull.ull.es/xmlui/handle/915/26746
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DS Repositorio institucional de la Universidad de La Laguna
RD 27-dic-2024