159,019 species and infraspecific names are in the database, 22,477 images, 61,663 bibliographic items, 460,430 distributional records.

Alethocladus Sauvageau, 1903

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Phaeophyceae
Subclass Dictyotophycidae
Order Sphacelariales
Family Stypocaulaceae

Holotype species: Alethocladus corymbosus (Dickie) Sauvageau

Currently accepted name for the type species: Halopteris corymbosa (Dickie) Draisma, Prud'homme & H.Kawai

Original publication and holotype designation: Sauvageau, C. (1903). Remarques sur les Sphacélariacées. Journal de Botanique [Morot] 17: 332-353.

Taxonomic status: currently regarded as a synonym of Halopteris.

Gender: This genus name is currently treated as masculine.

Most recent taxonomic treatment adopted: Draisma, S.G.A., Prud'homme van Reine, W.F. & Kawai, H. (2010). A revised classification of the Sphacelariales (Phaeophyceae) inferred from a psbC and rbcL based phylogeny. European Journal of Phycology 45(3): 308-326.

Description: Plants forming ca. 5 cm tall tufts composed of dark brown, wiry, erect axes and laterals. Basal parts unknown. Erect first-order laterals filamentous, terete, articulated, isodiametric, bushy, with acrohomoblastic, rarely acroheteroblastic, distichous-alternately branched second and third order laterals. Forming one lenticular branch initial from each conspicuous cylindrical apical cell before a segment is cut off. Segments each dividing transversely once preceeding frequent longitudinal and transverse segmentation. Corticating rhizoids frequent. Hairs not observed. Reproductive structures unknown.

Information kindly contributed by Prud'homme van Reine but may now be outdated.

Comments: Probably distributed throughout southern high latitudes, mostly subantarctic. Genus of uncertain status, possibly synonymous with Stypocaulon Kützing.

Numbers of names and species: There is only one species or infraspecific name in the database at present.

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.

References
Draisma, S.G.A., Prud'homme van Reine, W.F. & Kawai, H. (2010). A revised classification of the Sphacelariales (Phaeophyceae) inferred from a psbC and rbcL based phylogeny. European Journal of Phycology 45(3): 308-326.

Verification of data
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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: 10 March 2020 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42610

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 September 2020.

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