153,622 species and infraspecific names are in the database, 20,981 images, 59,421 bibliographic items, 412,629 distributional records.

Erythroclonium Sonder, 1853

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Gigartinales
Family Areschougiaceae

Lectotype species: Erythroclonium muelleri Sonder

Original publication:Sonder, O.G. (1853). Plantae Muellerianae. Algae. Linnaea 25: 657-703.
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Type designated in Schmitz, F. (1889). Systematische √úbersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Huisman, J.M. (2018). Algae of Australia. Marine benthic algae of north-western Australia. 2. Red algae. pp. [i]-xii, 1-672, 189 figs. Canberra & Melbourne: ABRS & CSIRO Publishing.

Description: Plants of the largest species reach 25 cm in length. Thalli are erect from a crustose holdfast, terete, and conspicuously jointed or segmented, the branching being associated with the segment nodes. Apices are uniaxial, each central axial cell giving rise to two periaxial cells. Cross sections display a broad, filamentous medulla in which the axial filament is prominent, surrounded by a shallow cortex of subisodiametric cells. Carpogonial branches are 3- or 4 celled, the basal 1-2 cells at times bearing sterile cells or filaments. Generally 1 (1-3 in E. angustatum Sonder) connecting filament arises from the fertilized carpogonium. Ostiolate cystocarps are embedded in the branches and are composed of a large fusion cell lateral to the central axial filament, surrounded by very few layers of sterile gonimoblast cells bearing chains of carposporangia. Scattered sterile filaments connect the carposporophyte to the gametophyte. A loose filamentous sheath encircles the mature gonimoblast. Spermatangia are scattered in clusters over the young branches, and tetrasporangia are laterally attached to bearing cells.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 25 Sep 2018 by M.D. Guiry.

Comments: The genus has been monographed (as a member of the Rhabdoniaceae) by Min-Thein and Womersley (1976). Gabrielson and Hommersand (1982) transferred it to the Solieriaceae and the Tribe Solierieae. Distribution: The entire genus is endemic to southern Australia, where it occurs on subtidal rocks.

Numbers of names and species: There are 7 species names in the database at present, of which 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.

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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: 01 January 2001 by M.D. Guiry

Verified by: 25 September 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=35107

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 20 November 2018.

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