Polycoelia J.Agardh, 1849

Holotype species: Polycoelia laciniata J.Agardh

Original publication and holotype designation: Agardh, J.G. (1849). Algolosgiska bidrag. Öfversigt af Kongl. Vetenskaps-Adademiens Förhandlingar, Stockholm 6: 79-89.

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Description: Erect, flat, subdichotomously to polychotomously branched in one plane to several orders, often with numerous bladelets from margin. Firm when fresh, becoming cartilaginous. Stipe short. Holdfast small, discoid. Medulla of large isodiametric to slightly elongate, thick-walled cells arranged in a single layer, surrounded by slender, small-celled filaments, which also form the cortex. Stellate cells absent. Cuticle present. Carpogonial branch 3-celled, borne singly on an elongate, often lobed supporting cell with several elongate, irregularly clavate subsidiary cells. Fusion cell lobed, producing several connecting filaments that contact a remote auxiliary cell, also bearing isodiametric to slightly elongate subsidiary cells. Carposporangia surrounded by gonimoblast and pericarp filaments. Cystocarp protruding slightly. Carpostome lacking. Spermatangia superficial. Tetrasporophyte isomorphic. Tetrasporangia cruciate, scattered in cortex.

Information contributed by: S.C. Lindstrom. The most recent alteration to this page was made on 2017-06-08 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Saunders, G.W., Huisman, J.M., Vergés, A., Kraft, G.T. & Le Gall, L. (2017). Phylogenetic analyses support recognition of ten new genera, ten new species and 16 new combinations in the family Kallymeniaceae (Gigartinales, Rhodophyta). Cryptogamie Algologie 38(2): 79-132, 126 figs.

Comments: Subtidal. Known only from western and southern Australia, including Tasmania

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=34435

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 June 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024