Chara tomentosa Linnaeus Macro view of an isolated branch. Lough Owel, Ireland. Collected by N.F. Stewart
Chara tomentosa Linnaeus 1753: 1156
Published in: Linnaeus, C. (1753). Species plantarum, exhibentes plantas rite cognitas, ad genera
relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas. Vol. 2 pp. [i], 561-1200, [1-30, index], [i, err.]. Holmiae [Stockholm]: Impensis Laurentii Salvii.
Publication date: 1 May 1753
Status of name
This name is of an entity that is currently accepted taxonomically.
Subgenus Chara Section Chara
Origin of species name
Adjective (Latin), tomentose, i.e., thickly and evenly covered with short more or less adpressed curled or curved matted hairs (Stearn 1973).
Chara latifolia C.L.Willdenow 1809
Chara ceratophylla Wallroth 1815
Chara ceratophylla var. inflatum Wallroth 1833
Chara ceratophylla var. macroptila A.Braun 1835
Chara ceratophylla var. microptila A.Braun 1835
Chara ceratophylla subsp. ceratophylla (Wallroth) A.Braun 1868
Chara disjuncta (O.Nordstedt) Trabut ex Feldmann 1946
This is a freshwater species.
(as Chara tomentosa Linnaeus)
Danish: Tyk kransnål (Langangen 2007).
English: Coral Stonewort (Stewart & Church 1992).
Finland: Rödsträfse (Langangen 2007).
Norwegian: Rødkrans (Langangen 2007).
Swedish: Rödsträfse (Tolstoy & Österlund 2003).
In this species the plants are robust, from 10 60 cm long, and the axis is up to 2 mm in diameter. Parts of the plants, especially young plants have a red colour which is an important character for the determination of the species. Plants from deeper water are green. The plants are usually heavily encrusted. The branchlets are 6- 8, short, each with 4- 5 segments. The stem cortex is diplostichous, tylacanthous. The spine cells are solitary or geminate, swollen, and similar to the stipulodes and the bract-cells. The species is dioecious. Gametangia are at the 2-3 lowest branchlet nodes. The oogonia are up to 1.2 mm long. The oospore is brown. The antheridia are very large and up to 1.5 mm in diameter.
Chara tomentosa is found both in freshwater and brackish water, the last in the Baltic Sea (red parts on the map). It is found within the salinity area 4.5 7.5 PSU, and it is presumed that lower or higher salinity are natural limits for the distribution of the brackish water form. The species is found in sheltered places, bays, coastal lagoons on soft muddy bottoms down to 3 m depth. In freshwater Chara tomentosa is only found in calcareous waters, Chara- to Potamogeton-lakes. C. tomentosa is a perennial species. It grows down to a depth of 4-5 m, on limerich sediments. Often the species is found in dense, mixed populations with other Chara-lakes species. Fertile plants are normally found in June to September. Ripe, brown oospores are rare, and sexual reproduction is therefore ineffective. This is, in addition to its special habitats one of the factors which limits the distribution of the species.
Type locality: Europe (Silva 1996-to date). Lectotype [per R.D.Wood 1960]: Linn (Ahmadi et al. 2012: 379).
Detailed conservation status with sources
(as Chara tomentosa Linnaeus)
Vulnerable: (Stewart & Church 1992)
Ahmadi, A., Sheidai, A.M., H. Riahi, H. & Van Raam, J.C. (2012). Some Charophytes (Characeae, Charophyta) from central and western of Iran including Chara kohrangiana species nova. Cryptogamie Algologie 33(4): 359-390. [in English]
Borisova, O.V. (2015 '2014'). Charales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 4: Charophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 454-465. Ruggell: Koeltz Scientific Books.
Bryant, J.A. & Stewart, N.F. (2011). Phylum Chlorophyta. Order Charales. In: The freshwater algal flora of the British Isles. An identification guide to freshwater and terrestrial algae. Second edition. (John, D.M., Whitton, B.A. & Brook, A.J. Eds), pp. 742-765. Cambridge: Cambridge University Press.
Cirujano, S, Cambra, J., Sánchez Castillo, P.M., Meco, A. & Flor Arnau, N. (2008). Flora ibérica algas continentales. Carófitos (Characeae). pp. -132, 125 figs. Madrid: Real Jardín Botánico.
Mannschreck, B., Fink, T. & Melzer, A. (2002). Biosystematics of selected Chara species (Charophyta) using amplified fragment length polymorphism. Phycologia 41: 657-666.
Moore, J.A. (1986). Charophytes of Great Britain and Ireland. B.S.B.I. Handbook No. 5. Illustrated by Margaret Tebbs. Distribution maps prepared by Dorothy Green. pp. [i-ii], 1-140, 26 figs, 17 maps. London: Botanical Society of the British Isles.
Muller, S, D., Rhazi, L. & Soulie-Märsche, I. (2017). Diversity and distribution of Characeae in the Maghreb (Algeria, Morocco, Tunisia). Crytogamie Algologie 38(3): 201-251.
Ruprecht, F.J. (1846). Symbolae ad historiam et geographiam plantarum Rossicarum. pp. -242, 6 pls. Petropoli [St Petersburg]: typis et impensis academinae imperialis scientiarum.
Schneider, S.C., Rodrigues, A., Moe, T.F. & Ballot, A. (2015). DNA barcoding the genus Chara: molecular evidence recovers fewer taxa than the classical morphological approach. Journal of Phycology 51(2): 367-380.
Schubert, H & Blindow, I. (2004). Charophytes of the Baltic Sea. . Ruggell: A.R.G. Gantner Verlag Kommanditgesellschaft.
Spencer, M.A., Irvine, L.M. & Jarvis, C.E. (2009). Typification of Linnaean names relevant to algal nomenclature. Taxon 58: 237-260.
Urbaniak, J. & Gabka, M. (2014). Polish Charophytes. An illustrated guide to identification. pp. -120. Wroclaw: Uniwersytet Przyrodniczy we Wroclawiu.
Willdenow, C.L. (1805). Du genre nommé Chara. Mémoires de l'Académie Royale des Sciences et Belles-Lettres [Berlin], Classe de Philosophie Expérimentale 1805: 79-90, pls I, II.
Created: 11 April 2002 by M.D. Guiry
Verified by: 22 March 2018 by M.D. Guiry
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(Please note: only references with the binomials in the title are included. The information is from the Literature database.)
Henricson, C., Sandberg-Kilpi, E. & Munsterhjelm, R. (2006). Experimental studies on the impact of turbulence, turbidity and sedimentation on Chara tomentosa L. . Cryptogamie, Algologie 27(4): 419-434.
Kunachowicz, A., Luchniak, P., Olszewska, M.J. & Sakowicz, T. (2001). Comparitave karyology, DNA methylation and restriction pattern analysis of male and female plants of the dioecious alga Chara tomentosa (Charophyceae). European Journal of Phycology 36: 29-34.
Libbert, E. & Walter, T. (1985). Photosynthetic production of a brackish water community of Chara tomentosa L. and its dependence on environmental conditions. Int. Rev. Ges. Hydrobiol. 70: 359-368.
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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 09 December 2019.