RT info:eu-repo/semantics/article
T1 Vegetative and reproductive morphology of Helminthocladia calvadosii, H. agardhiana and H. reyesii sp. nov. (Liagoraceae, Rhodophyta) from the eastern Atlantic.
A1 Afonso Carrillo, Julio
A1 O'Dwyer, Jacquiline A
AD 
A2 BotánicaEcología y Fisiología Vegetal
A2 Botánica Marina
AB The type species of Helminthocladia, Helminthocladia calvadosii, and two species known from the eastern Atlantic andMediterranean, H. agardhiana and H. reyesii O'Dwyer & Afonso-Carrillo sp. nov., are described in detail. The species aremainly distinguishable by their habit, the morphology of the cortical fascicles, and the type of carposporangium (undividedsingle terminal, quadripartite single terminal, and undivided in short chains). The previously controversial reproductivemorphology in H. calvadosii has been clarified from observations of plants from northern Spain. In H. calvadosii. simultaneously with gonimoblast development, sterile postfertilization filaments are produced from the suprasupporting cell andsome other cortical cells adjacent to the carpogonial branch. The development of these sterile filaments is highly variablewithin the same area of the plant. S terile filaments can be absent, presenting an entirely naked carpogonial branch belowthe mature carposporophyte. H. reyesii, known so far only from the Canary Islands, has a unique feature: the elaborationfrom the suprasupporting cells of sterile moniliform postfertilization filaments that partially or completely surround thecarpogonial branch. Additionally, H. reyesii differs from other Helminthocladia species by a unique combination of significant attributes. We analyse the features used at present to delineate the genus Helminthocladia in the Liagoraceae and givea comparative table of the morphological attributes of the species currently accepted in Helminthocladia.
YR 2001
FD 2001
LK http://riull.ull.es/xmlui/handle/915/26952
UL http://riull.ull.es/xmlui/handle/915/26952
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 25-abr-2024