Myriotrichia clavaeformis Harvey Ría de Ares, Galicia, Spain, 2014
© Ignacio Barbara
Myriotrichia clavaeformis Harvey 1834: 300, pl. CXXXVIII 
Published in: Harvey, W.H. (1834). Algological illustrations. No. I. Remarks on some British algae, and descriptions of new species recently added to our flora. Journal of Botany [Hooker] 1: 296-305, pls CXXXVIII, CXXXIX.
This is the type species (holotype) of the genus Myriotrichia.
Status of name
This name is of an entity that is currently accepted taxonomically.
Origin of species name
Adjective (Latin), club-shaped (Stearn 1973).
Myriotrichia clavaeformis var. minima Holmes & Batters
Myriotrichia filiformis Harvey 1841
Myriotrichia harveyana Nägeli 1847
Ectocarpus sphaericus Derbès & Solier 1851
Streblonema sphaericum (Derbès & Solier) Thuret 1863
Myriotrichia clavaeformis f. filiformis (Harvey) Kjellman 1890
Myriotrichia clavaeformis var. subcylindrica Batters 1895
Myrionema irregulare Jaasund 1951
AlgaeBase had changed clavaeformis to claviformis wishing to conform with Art. 60.8: "Adjectival epithets that combine elements derived from two or more Greek or Latin words but are not formed in accordance with Rec. 60G.1(a) are to be corrected to conform with it, unless Rec. 60G.1(b) or (c) applies. In particular, the use, in pseudocompounding, of the genitive singular of Latin first-declension nouns (Rec. 60G.1(c)) instead of a regular compound (Rec. 60G.1(a)) is treated as an error to be corrected unless it serves to make an etymological distinction." Akira Peters writes (22 February 2016) "The last sentence of 60G.1.(b) states "The latter use of the genitive singular of the first declension for pseudocompounding is treated as an error to be corrected unless it makes an etymological distinction". The examples provided (tubaeflorus and caricaefolius) to my opinion suggest that clavaeformis has to be maintained because there is an etymological distinction. Harvey did probably not want to describe the species to be like a nail (clavus -> claviformis) but rather like a club (clava -> clavaeformis), which well describes the overall habit of the alga; clavis=key we can exclude. He used the term "lineari-clavatae" in the diagnosis, in which the part clavatae could be derived from either of the nouns above but to me it appears more reasonable to think that Harvey associated "club-shaped". In English, the term "clavate" means "club-shaped." I presume if Harvey had wanted to say nail-formed, he would have used "claviformis" himself. Moreover, in Harvey (1841) he wrote "giving the frond a club-shaped figure"." - (10 Nov 2012) - M.D. Guiry
John et al. (2004) cite Myriotrichia repens (Hauck) Korsakoff as a synonym of this species.
This is a marine species.
Type locality: Bathing Cove, Torquay, England (Harvey 1834: 300). Type: Mrs A.W. Griffiths; August 1833; on Chorda limentaria [Scytosiphon lomentarius]. TCD? (Womersley 1987: 304).
Cormaci, M., Furnari, G., Catra, M., Alongi, G. & Giaccone, G. (2012). Flora marina bentonica del Mediterraneo: Phaeophyceae. Bollettino dell'Accademia Gioenia 45: 1-508.
Dawes, C.J. & Mathieson, A.C. (2008). The seaweeds of Florida. pp. [i]- viii, -591, , pls I-LI. Gainesville, Florida: University Press of Florida.
Fletcher, R.L. (1987). Seaweeds of the British Isles. Vol. 3. Fucophyceae (Phaeophyceae). Part 1. pp. [i]-x, -359, 90 figs, 15 pls. London: British Museum (Natural History).
Funk, G. (1955). Beiträge zur Kenntnis der Meeresalgen von Neapel: Zugleich mikrophotographischer Atlas. Pubblicazioni della Stazione Zoologica di Napoli 25(Suppl.): i-x , 1-178, 36 figs.
Mathieson, A.C. & Dawes, C.J. (2017). Seaweeds of the Northwest Atlantic. pp. [i]-x, 1-798, CIX pls. Amherst & Boston: University of Massachusetts Press.
Mystikou, A., Aseni, A.O., DeClerck, O., Müller, D.G., Peters, A.F., Tsiamis, K., Fletcher, K.I., Westermeier, R., Brickle, P., van West, P. & Küpper, F.C. (2016). New records and observations of macroalgae and associated pathogens from the Falkland Islands, Patagonia and Tierra del Fuego. Botanica Marina 59(2-3): 105-121.
Womersley, H.B.S. (1987). The marine benthic flora of southern Australia. Part II. pp. 481, 169 figs, 1 table, 8 plates, 4 maps. Adelaide: South Australian Government Printing Division.
Created: 07 April 1996 by M.D. Guiry
Verified by: 26 July 2017 by M.D. Guiry
Accesses: This record has been accessed by users 3264 times since it was created.
Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)
Maier, I., Rometsch, E., Wolf, S., Kapp, M. & Müller, D.G. (1997). Passage of a marine brown algal DNA virus from Ectocarpus fasciculatus (Ectocarpales, Phaeophyceae) to Myriotrichia clavaeformis (dictyosiphonales, Phaeophyceae): infection symptoms and recovery. Journal of Phycology 33: 838-844, 19 figs.
Müller, D.G., Wolf, S. & Parodi, E.R. (1996). A virus infection in Myriotrichia clavaeformis (Dictyosiphonales, Phaeophyceae) from Argentina. Protoplasma 198: 58-62.
Pedersen, P.M. (1978). Culture studies in the pleomorphic brown alga Myriotrichia clavaeformis (Dictyosiphonales, Myriotrichiaeae). Norwegian Journal of Botany 25: 281-291, 34 figs, 1 table.
Peters, A.F. (1988). Culture studies of a sexual life history in Myriotrichia clavaeformis (Phaeophyceae, Dictyosiphonales). British Phycological Journal 23: 299-306.
Wolf, S., Müller, D.G. & Maier, I. (2000). Assembly of a large icosahedral DNA virus, MclaV-1, in the marine alga Myriotrichia clavaeformis (Dictyosiphonales, Phaeophyceae). European Journal of Phycology 35: 163-171, 26 figs.
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Cite this record as:
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 22 April 2019.