153,607 species and infraspecific names are in the database, 20,980 images, 59,405 bibliographic items, 411,227 distributional records.

Areschougia Harvey, 1855, nom. cons.

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

Lectotype species: Areschougia laurencia (J.D.Hooker & Harvey) Harvey

Currently accepted name for the type species: Areschougia congesta (R.Brown ex Turner) J.Agardh

Original publication:Harvey, W.H. (1855). Some account of the marine botany of the colony of western Australia. Transactions of the Royal Irish Academy 22: 525-566.
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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.

Gender: This genus name is currently treated as feminine.

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 reach 40 cm in length, are erect from a crustose base, and, depending on the species, are either terete and irregularly radially branched or flattned with a prominent midrib and marginally proliferous. Axes are uniaxial, each axial cell giving rise to a single periaxial cell and remaining distinct in lower cross sections. Carpogonial branches are 3-4-celled, sterile cells occasionally being borne on the hypogynous or basal cells. Fertilization results in 3-7 connecting filaments issuing from the carpogonium. Cystocarps are composed of a central fusion cell incorporating cells of the cortical axial filament containing the auxiliary cell, the auxiliary cell, and inner gonimoblast layers. Carposporangia form in chains of 2-4 on short sterile gonimoblast filaments radiating from the fusion cell, the carposporophyte enveloped by a filamentous hull. Spermatangia are unreported. Tetrasporangia are attached to the bearing cells by a basal pit connection.

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

Comments: Distribution: The type and two additional species, A. ligulata Harvey ex J. Agardh and A. stuartii Harvey, are endemic to Southern Australia. The genus has been monographed by Min-Thein and Womersley (1976), and was transferred to the Solieriaceae from the Caulacanthaceae (as Rhabdoniaceae) by Gabrielson and Hommersand (1982), who also establish the tribe Agardhiellieae for this and related genera.

Numbers of names and species: There are 12 species names in the database at present, as well as 1 infraspecific names. Of the species names, 3 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: 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=35095

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 18 November 2018.

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