Taxonomic notes on Laurencia brongniartii (Rhodomelaceae, Rhodophyta) |
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| Authors: | Tsuyoshi Abe Michio Masuda Shigeo Kawaguchi Shintoku Kamura |
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| Institution: | Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060–0810, Japan;Department of Fisheries, Faculty of Agriculture, Kyushu University, Fukuoka 812–0053, Japan;Department of Chemistry, Biology and Marine Science, College of Science, University of the Ryukyus, Nishihara, Okinawa 903–0213, Japan |
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| Abstract: | The red alga Laurencia brongniartii J. Agardh (Rhodomelaceae, Ceramiales) is characterized by: (i) the production of four periaxial cells from each vegetative axial segment; (ii) the presence of two or three corps en cerise per superficial cortical cell and one per trichoblast cell; (iii) the production of a single tetrasporangium-bearing periaxial (fourth) cell per fertile segment; (iv) a tetrasporangial arrangement that is intermediate between perpendicular and parallel types; (v) procarps produced from the last-formed (fifth) periaxial cell of the terminal segment of a two-celled female trichoblast; and (vi) distally positioned spermatangial nuclei, in addition to known features. The production of a single tet-rasporangium-bearing periaxial cell per fertile segment allies this species to Laurencia similis Nam et Saito. |
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| Keywords: | Ceramiales corps en cerise Japan Laurencia brongniartii morphology Rhodomelaceae Rhodophyta taxonomy |
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