153,600 species and infraspecific names are in the database, 20,980 images, 59,403 bibliographic items, 411,227 distributional records.

Lobophora J.Agardh, 1894

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Phaeophyceae
Subclass Dictyotophycidae
Order Dictyotales
Family Dictyotaceae
Tribe Zonarieae

Holotype species: Lobophora nigrescens J.Agardh

Original publication and holotype designation: Agardh, J.G. (1894). Analecta algologica, observationes de speciebus algarum minus cognitae earumque dispositione. Continuatio I. Lunds Universitets Års-Skrift, Andra Afdelningen, Kongl. Fysiografiska Sällskapets i Lund Handlingar 29(9): 1-144, 2 plates.
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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: Thalli decumbent to erect, arising from a matted rhizoidal holdfast, up to 20 cm long, with broadly flabellate to irregularly laterally branched fronds. Growth initiated by a complete row of apical cells. Thalli usually 7-12 cells thick with an outermost layer of cortical cells overlying the larger internal medullary cells. Cells in transverse section rectangular, arranged in tiers with 2 cortical cells overlying each medullary cell. Medullary cells of uniform size except for the markedly larger central layer. Cortical cells with numerous discoid chloroplasts. Hairs arranged in concentric lines or scattered tufts. Sporangial sori scattered or in concentric bands on both surfaces of the thallus, indusiate, without paraphyses. Sporangia without a basal stalk cell, producing 8 spores. Oogonia in indefinite sori on both surfaces of the frond. Antheridial plants not known. Tropical to temperate seas.

Information contributed by: J. A. Phillips and R. J. King. The most recent alteration to this page was made on 8 Jun 2018 by M.D. Guiry.

Numbers of names and species: There are 33 species names in the database at present, as well as 2 infraspecific names. Of the species names, 25 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.

References
Ribero Siguan, M.A., Gomez Garreta, A., Salvador Soler, N. Rull Lluch, J. & Kapraun, D.F. (2011). Nuclear content estimates suggest a synapomorphy between Dictyota and six genera of the Dictyotales (Phaeophyceae). Cryptogamie Algologie 32(2): 205-219.

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: 08 June 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=38155

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 17 November 2018.

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