Medeiothamnion thouarsii (Montagne) M.J.Wynne & C.W.Schneider, 2021

Wynne, Michael J., 2021, Proposal of Medeiothamnion thouarsii (Montagne) comb. nov. (Wrangeliaceae, Rhodophyta), Notulae Algarum 176, pp. 1-5 : 2-3

publication ID	https://doi.org/10.5281/zenodo.16652607
persistent identifier	https://treatment.plazi.org/id/03CD87D0-FFF1-C447-EBAC-B7C2FD39FC56
treatment provided by	Felipe
scientific name	Medeiothamnion thouarsii (Montagne) M.J.Wynne & C.W.Schneider
status	comb. nov.

Treatment

Medeiothamnion thouarsii (Montagne) M.J.Wynne & C.W.Schneider , comb. nov.

Basionym: Callithamnion thouarsii Montagne, Annales des Sciences Naturelles, Botanique, Seconde série 8: 351, 1837.

Holotype: PC 0047016 ( Fig. 2 View Fig ).

Type locality: Valparaiso [ Chile]

Etiquette on the label: Ceramium (Callithamnion) Thouarsii Montag. n. sp. Capt. Du Petit Thouars 1835, Valparaiso.

Homotypic synonyms: Antithamnion thouarsii (Montagne) De Toni 1903: 1403 . Sphondylothamnion thouarsii (Montagne) G. Feldmann 1950: 311 .

Heterotypic synonyms: Wrangelia lyallii Harvey 1855: 236 . Type locality: Rakiura Island, Foveaux Strait, New Zealand; leg. David Lyall, January 1851, s.n. Type in BM. Medeiothamnion lyallii (Harvey) E.M. Gordon 1972: 59 .

Note: Montagne (1837: 351) referred only to a collection by Du Petit Thouars from Valparaiso represented by a single specimen at PC. As there are no syntypes or isotypes, this specimen is automatically the holotype.

The recognition of Medeiothamnion thouarsii as a species occurring both in New Zealand and the Pacific coast of South America adds to the many species with such wide-ranging distributions in the Southern Hemisphere ( Levring 1960, Santelices 1980, Hoffmann & Santelices 1997).

Adams, N.M. (1994). Seaweeds of New Zealand. An Illustrated Guide. pp. [1]–360, 116 pls. Christchurch: Canterbury University Press.

Brauner, J.F. (1979). Developmental morphology and taxonomy of Medeiothamnion flaccidum (Hooker & Harvey) comb. nov. (Ceramiaceae, Rhodophyta) from South America. Phycologia 18: 338–346.

De Toni, G.B. (1903). Sylloge algarum omnium hucusque cognitarum. Vol. IV. Florideae. Sectio III. pp. [i], frontispiece, [iii-v], 775, 775 bis, 776, 777 bis, 777–1521 + 1523–1525. Patavii [Padua]: Sumptibus auctoris.

Dixon, P.S. (1963). Sphondylothamnion multifidum (Huds.) Näg. in western Europe. British Phycological Bulletin 2: 219–223, 2 figs.

Feldmann, G. (1950). Sur quelques Céramiacées de Nouvelle-Zelande. Bulletin du Muséum National d'Histoire Naturelle, Série 2, 22: 131– 141, 307–314, 13 figs.

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Harvey, W.H. (1855). Algae. In: The Botany of the Antarctic Voyage of H.M. Discovery Ships ‘Erebus’ and ‘Terror’, in the years 1839-1843, under the command of Captain Sir James Clark Ross.... II. Flora Novae-Zelandiae. Part II. Flowerless plants. (Hooker, J.D. Ed.), pp. 211–266, pls. 107-121. London: Reeve.

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Maggs, C.A. & M.H. Hommersand (1993). Seaweeds of the British Isles. Vol. 1 Rhodophyta. Part 3A Ceramiales. pp. [i] –xiii, [1] –444, 1 map. The Natural History Museum. London: HMSO Publications.

Montagne, C. (1837). Centurie de plantes cellulaires exotiques nouvelles. Annales des Sciences Naturelles, Botanique, Seconde série 8: 345–370.

Montagne, J.P.F.C. (1839, 1847). Cryptogamie. In: A.D. d’Orbigny, Voyage dans l‘Amérique Méridionale (le Brésil, la republique...) exécuté pendant les années 1826, 1827, 1828, 1829, 1830, 1831, 1832 et 1833. Vol. 7. Botanique. Part I. Sertum patagonicum., pp. 3–39. Vol. 8 [Atlas]: pls. 1-7 [1847]. Paris, chez P. Bertrand; Strasbourg: V. Levrault.

Nelson, W.A. (2013). New Zealand seaweeds. An illustrated guide. pp. [1]–328. Wellington: Te Papa Press.

Pujals, C. (1970). Medeiothamnion nuevo género de Ceramiaceae. Revista del Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" e Instituto Nacional de Investigacion de las Ciencias Naturales (Botanica) 3 (10): 287–299.

Ramírez, M.E. & Santelices, B. (1991). Catálogo de las algas marinas bentónicas de la costa temperada del Pacífico de Sudamérica. Monografías Biológicas 5: 1–437.

Santelices, B. (1980). Phytogeographic characterization of the temperate coast of South Americas. Phycologia 19 (1): 1–12, 8 figs, 1 table.