Two new species of Polysiphonia (Ceramiales, Florideophyceae) from the western Atlantic
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Brooke Stuercke
Abstract
Integrated morphological and molecular analyses of Polysiphonia species revealed that two western Atlantic species identified as P. denudata and P. urceolata (=P. stricta) represent undescribed taxa. Polysiphonia schneideri sp. nov. is proposed for specimens previously referred to P. denudata that are ecorticate and have six (5–7) pericentral cells, lateral branches that arise in the axils of trichoblasts, rhizoids cut-off from pericentral cells, trichoblasts irregularly arranged and not on every segment, spermatangial stichidia forming as a furcation of trichoblasts, and tetrasporangia arranged in straight series. Polysiphonia kapraunii sp. nov. is proposed for specimens previously referred to P. urceolata (=P. stricta) that are ecorticate and have four pericentral cells, lateral branches that replace trichoblasts, rhizoids in open connection with pericentral cells, trichoblasts irregularly arranged and not on every segment, spermatangial stichidia forming as a furcation of trichoblasts, and tetrasporangia arranged in straight series. Phylogenetic analyses of rbcL show that the newly described species are unique and clearly distinct from the species with which they had previously been identified.
©2010 by Walter de Gruyter Berlin New York
Articles in the same Issue
- Review
- Addendum to the synoptic review of red algal genera
- Research articles
- Two new species of Polysiphonia (Ceramiales, Florideophyceae) from the western Atlantic
- Apoglossum gregarium (Delesseriaceae, Rhodophyta) from Greece: a new record for the eastern Mediterranean Sea
- New macroalgal records for the Aegean Sea (Greece, eastern Mediterranean Sea)
- On the occurrence of Mesophyllum expansum (Philippi) Cabioch et Mendoza (Melobesioideae, Corallinales, Rhodophyta) in the Mediterranean Sea, the Canary Isles and the Azores
- Additional records of Gelidiella fanii (Gelidiales, Rhodophyta) from the western Pacific based on morphology, rbcL and cox1 analyses
- Nuclear rDNA sequences of Wittrockiella amphibia (Collins) comb. nov. (Cladophorales, Chlorophyta) and morphological characterization of the mat-like growth form
- Morphology of the flagellar pore complex in Prorocentrum minimum (Dinophyceae) from the Adriatic and Baltic Seas
- Seasonality of caulerpenyne content in native Caulerpa prolifera and invasive C. taxifolia and C. racemosa var. cylindracea in the western Mediterranean Sea
- Uptake and metabolism of arsenate, methylarsonate and arsenobetaine by axenic cultures of the phytoplankton Dunaliella tertiolecta
Articles in the same Issue
- Review
- Addendum to the synoptic review of red algal genera
- Research articles
- Two new species of Polysiphonia (Ceramiales, Florideophyceae) from the western Atlantic
- Apoglossum gregarium (Delesseriaceae, Rhodophyta) from Greece: a new record for the eastern Mediterranean Sea
- New macroalgal records for the Aegean Sea (Greece, eastern Mediterranean Sea)
- On the occurrence of Mesophyllum expansum (Philippi) Cabioch et Mendoza (Melobesioideae, Corallinales, Rhodophyta) in the Mediterranean Sea, the Canary Isles and the Azores
- Additional records of Gelidiella fanii (Gelidiales, Rhodophyta) from the western Pacific based on morphology, rbcL and cox1 analyses
- Nuclear rDNA sequences of Wittrockiella amphibia (Collins) comb. nov. (Cladophorales, Chlorophyta) and morphological characterization of the mat-like growth form
- Morphology of the flagellar pore complex in Prorocentrum minimum (Dinophyceae) from the Adriatic and Baltic Seas
- Seasonality of caulerpenyne content in native Caulerpa prolifera and invasive C. taxifolia and C. racemosa var. cylindracea in the western Mediterranean Sea
- Uptake and metabolism of arsenate, methylarsonate and arsenobetaine by axenic cultures of the phytoplankton Dunaliella tertiolecta
