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Morphology and systematics of Sciurothamnion stegengae gen. et sp. nov. (Ceramiaceae, Rhodophyta) from the Indo-Pacific De Clerck, O.; Kraft, G. T.; Coppejans, E. (2002). Morphology and systematics of Sciurothamnion stegengae gen. et sp. nov. (Ceramiaceae, Rhodophyta) from the Indo-Pacific. J. Phycol. 38(6): 1176-1189. dx.doi.org/10.1046/j.1529-8817.2002.01247.x In: Journal of Phycology. Blackwell Science: New York. ISSN 0022-3646; e-ISSN 1529-8817, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 39420 [ download pdf ]

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Trefwoorden

Anatomical structures > Body organs > Plant organs > Plant reproductive structures Biology > Organism morphology > Plant morphology Cell constituents > Nuclei Classification > Taxonomy Developmental stages Fertilization Flora > Weeds > Marine organisms > Seaweeds Reproduction > Sexual reproduction Reproduction > Sexual reproduction > Fertilization Taxa > New taxa > New genera Taxa > Species > New taxa > New species Algae [Algen]; Callithamnieae Schmitz, 1889 [WoRMS]; Ceramiaceae Dumortier, 1822 [WoRMS]; Rhodophyta [WoRMS]; Sciurothamnion De Clerck & Kraft, 2002 [WoRMS]; Sciurothamnion stegengae De Clerck & Kraft, 2002 [WoRMS] ISW, West Indian Ocean [Marine Regions] Marien/Kust

Author keywords

algae; Ceramiaceae; cytology; morphology; Rhodophyta; Sciurothamnion gen. nov.; Sciurothamnion stegengae sp. nov.; systematics; taxonomy

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Auteurs		Top
De Clerck, O., meer Kraft, G. T. Coppejans, E., meer

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Abstract

A new ceramiaceous alga, Sciurothamnion stegengae De Clerck et Kraft, gen. et sp. nov., is described from the western Indian Ocean and the Philippines. Sciurothamnion appears related to the tribe Callithamnieae on the basis of the position and composition of its procarps and by the majority of post-fertilization events. It differs, however, from all current members of the tribe by the presence of two periaxial cells bearing determinate laterals per axial cell. Additionally, unlike any present representative of the subfamily Callithamnioideae, no intercalary foot cell is formed after diploidization of the paired auxiliary cells. The genus is characterized by a terminal foot cell (“disposal cell”), which segregates the haploid nuclei of the diploidized auxiliary cell from the diploid zygote nucleus. The nature of three types of foot cells reported in the Ceramiaceae (intercalary foot cells containing only haploid nuclei, intercalary foot cells containing haploid nuclei and a diploid nucleus, and terminal foot cells containing only haploid nuclei) is discussed.

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