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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, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 39420 [ OMA ]

Keywords
    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; 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]
    Marine/Coastal
Author keywords
    algae; Ceramiaceae; cytology; morphology; Rhodophyta; Sciurothamnion gen. nov.; Sciurothamnion stegengae sp. nov.; systematics; taxonomy

Authors  Top 
  • De Clerck, O., more
  • Kraft, G. T.
  • Coppejans, E., more

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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