RT info:eu-repo/semantics/article
T1 Notes on Rhodomelaceae (Rhodophyta) from the Canary Islands: Observations on reproductive morphology and new records
A1 Afonso Carrillo, Julio
A1 Rojas González, Berta
A2 BotánicaEcología y Fisiología Vegetal
A2 Botánica Marina
AB Sexual plants in the monotypic genus Ctenosiphonia Falkenberg and in two species of Polysiphonia Greville[P. subulifera (C. Agardh) Harvey and P. flexella (C. Agardh) J. Agardh] are described for the first time inmaterial collected from the Canary Islands. In Ctenosiphonia hypnoides (J. Agardh) Falkenberg cylindricalspermatangial axes replace both branches at the second dichotomy of fertile trichoblasts. The procarps ariseon the second basal segment of a fertile trichoblast and consist of a 4-celled carpogonial branch, and twosterile-cell groups are borne on the supporting cell. Up to ten cystocarps are arranged in a series on the dorsalside of erect branches. Both Polysiphonia subulifera and P. flexella show spermatangial axes formed at the firstdichotomy of fertile trichoblasts, replacing one branch and ending in 122 sterile terminal cells. Cystocarps areglobose to pyriform in P. subulifera and spherical and flattened in P. flexella. Two species of Rhodomelaceae:Polysiphonia tepida Hollenberg and Womersleyella setacea (Hollenberg) R. E. Norris, and Aiolocolax pulchellus Pocock, related to Rhodomelaceae but of uncertain systematic position, are reported from the CanaryIslands for the first time. Data concerning ecological conditions, geographical distribution, morphology andphenology are presented.
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DS Repositorio institucional de la Universidad de La Laguna
RD 19-abr-2024