153,631 species and infraspecific names are in the database, 20,983 images, 59,437 bibliographic items, 412,634 distributional records.

Myriotrichia Harvey, 1834

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Phaeophyceae
Subclass Fucophycidae
Order Ectocarpales
Family Chordariaceae

Holotype species: Myriotrichia clavaeformis Harvey

Original publication and holotype designation: 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.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156.

Description: The initial macrothallus is a uniseriate filament with a terminal true hair without a sheath. The uniseriate macrothallus may show sympodial branching. The fully-developed macrothallus is terete, solid and beset with few-celled determinate laterals; their development starts in the apical part of the macrothallus resulting in a club-shaped outline. The laterals may be transformed into plurilocular sporangia; unilocular sporangia formed from cortex cells of the macrothallus and may be found among plurilocular sporangia. Swarmers from plurilocular sporangia may show immediate differentiation. Myriotrichia clavaeformis is a pleomorphic species and its morphology depends on environmental conditions. Juvenile plants may also be fertile and these resemble M. filiformis Harv. and M. repens Hauck. The microthallus is probably identical with Streblonema sphaericum Derbès et Solier (Pedersen 1978b). Peters (1988) reported on a sexual life history in a strain from western Ireland.

Information contributed by: P. M. Pedersen. The most recent alteration to this page was made on 20 Jun 2014 by M.D. Guiry.

Numbers of names and species: There are 11 species names in the database at present, as well as 5 infraspecific names. Of the species names, 6 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Created: 28 December 2000 by M.D. Guiry

Verified by: 20 June 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=32887

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 21 November 2018.

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