Phymatolithon tenue (Rosenvinge) Düwel & Wegeberg
Phymatolithon tenue (Rosenvinge) Düwel & Wegeberg 1996: 482
Published in: Düwel, L. & Wegeberg, S. (1996). The typification and status of Leptophytum (Corallinaceae, Rhodophyta). Phycologia 35: 470-483.
Status of name
This name is of an entity that is currently accepted taxonomically.
Lithothamnion tenue Rosenvinge
Lectotype locality: Holstensborg, Greenland (Rosenvinge 1893: 778). Lectotype: Hartz; 20.vi.1890; 12 fathoms. C (Düwel & Wegeberg 1996: 478). Notes: Isolectotype: TRH B4-1868.
Origin of species name
Adjective (Latin), thin, fine, slender (Stearn 1973).
Lithothamnion tenue Rosenvinge 1893
Phymatolithon tenue has incorrectly been associated with the name Leptophytum leave, a heterotypic synonym of Phymatolithon lenormandii. Complex nomenclatural issues are involved. Düwel & Wegeberg (1996) concluded from a study of relevant type specimens and other material that Phymatolithon tenue was a distinct species, that the designated epitype of Leptophytum laeve Adey (1966) was conspecific with the type of Phymatolithon lenormandii, and that Adey's (1966) concept of Leptophytum laeve was in full accord with Phymatolithon tenue (also see Woelkerling et al. 2002). The holotype of L. leave, a Strömfelt specimen originally described as Lithophyllum laeve (Strömfelt 1886), was considered by Düwel & Wegebrg (1996) to be demonstrably ambiguous and not critically identifiable for purposes of the precise application of a name to a taxon, necessitating designation of an epitype. The interpretation (Athanasiadis 2007: 485) that Phymatolithon tenue is a heterotypic synonym of Leptophytum laeve stems from the arguments (Adey et al. 2001) that the designated epitype and the holotype of L laeve differ taxonomically and that the designated epitype is in serious conflict with the protologue. Based on these arguments, Athanasiadis & Adey (2003) proposed the formal conservation of the name Lithophyllum laeve Strömfelt with a conserved type. The nomenclatural Committee for Algae (Compère 2004), however, concluded that the arguments mentioned above were not substantiated, and the proposal was unanimously rejected. The Committee for Algae (Prud'homme van Reine 2011) also noted that subsequent arguments (Athanasiadis & Adey 2006: 72; Athanasiadis 2007: 485) that the epitypification of Düwel & Wegeberg was "non-effective" involve incorrect, unacceptable interpretations of the International Code of Nomenclature.
This is a marine species.
Adey, W.H. (1966). The genera Lithothamnium, Leptophytum (nov. gen.) and Phymatolithon in the Gulf of Maine. Hydrobiologia 28: 321-370, 112 figs, tables I-VI.
Adey, W.H., Athanasiadis, A. & Lebednik, P.A. (2001). Re-instatement of Leptophytum and its type Leptophytum laeve: taxonomy and biogeography of the genera Leptophytum and Phymatolithon (Corallinales, Rhodophyta). European Journal of Phycology 36: 191-204.
Athanasiadis, A. (2007 '2006'). The genus Leptophytum (Melobesioideae, Corallinales, Rhodophyta) in NW Spitsbergen. Nordic Journal of Botany 24: 469-499.
Athanasiadis, A. & Adey, W.H. (2003). Proposal to conserve the name Lithophyllum laeve Stromfelt against L. laeve Kützing (Corallinales, Rhodophyta) with a conserved type. Taxon 52: 342-350, 26 figs, 1 table.
Athanasiadis, A. & Adey, W.H. (2006). The genus Leptophytum (Melobesioideae, Corallinales, Rhodophyta) on the Pacific coast of North America. Phycologia 45: 71-115.
Athanasiadis, A. (2007). The genus Leptophytum (Melobesioideae, Corallinales, Rhodophyta) in NW Spitsbergen. Nordic Journal of Botany 24: 469-499.
Compère, P. (2004). Report of the Committee for Algae: 8. Taxon 53: 1065-1067.
Pedersen, P.M. (2011). Grønlands havalger. pp.  7-208. Copenhagen: Forlaget Epsilon.DK.
Prudhomme van Reine, W.F. (2011). Report of the Committee for Algae: 10. Taxon 60: 585-587.
Strömfelt, H.F.G. (1886). Om algvegetationen vid Islands Kuster. pp. 1-89. Göteborg: Akademisk Afhandling.
Teichert, S., Woelkerling, W., Rüggeberg, A., Wisshak, M., Piepenburg, D., Meyerhofer, M., Form, A., Büdenbender, J. & Freiwald, A. (2012). Rhodolith beds (Corallinales, Rhodophyta) and their physical and biological environment at 80º31'N in Nordkappbukta (Nordaustlandet, Svalbard Archipelago, Norway). Phycologia 51(4): 371-390.
Woelkerling, W.J., Furnari, G. & Cormaci, M. (2002). Leptophytum (Corallinaceae, Rhodophyta): to be or not to be? - that is the question, but what is the answer?. Australian Systematic Botany 15: 597-618.
Created: 10 May 2000 by Fabio Rindi
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Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 15 October 2018.