147,553 species and infraspecific names are in the database, 20,153 images, 56,615 bibliographic items, 351,744 distributional records.

Dictyopteris J.V.Lamouroux, 1809, nom. cons.

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

Holotype species: Dictyopteris polypodioides (A.P.De Candolle) J.V.Lamouroux

Original publication and holotype designation: Lamouroux, J.V.F. (1809). Observations sur la physiologie des algues marines, et description de cinq nouveaux genres de cette famille. Nouveau Bulletin des Sciences, par la Société Philomathique de Paris 1: 330-333, fig. 2, pl. 6.
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Precise date of publicationMay 1809

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

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 erect or prostrate, attached by a matted rhizoidal holdfast, up to 60 cm long, complanate or twisted, subdichotomously to laterally branched, branches 0.5-25 mm broad, with a conspicuous midrib, with or without fine veins in the lateral wings. Growth initiated by a marginal row of 3-15 apical cells. Thallus wings 1-8 cells thick with the midrib 8-30 cells thick. Thallus in multilayered species differentiated into a monostromatic cortex containing many chloroplasts and a medulla of slightly larger cells. Hair tufts scattered or in lines. Sporangia solitary or in sori, embedded in or projecting above both thallus surfaces, subspherical to ovoid, 80-120 mm in diameter when mature, without or with 1-2 stalk cells, forming 4 spores. Gametophytes dioecious. Oogonia solitary or in small groups on both thallus surfaces, embedded in or projecting above the thallus. Antheridial sori large, 400-1500 mm long and 200-1000 mm across, whitish, bordered by 1-3 layers of only slightly elongate sterile cells. Antheridia with many tiers of locules. Dictyopteris is easily recognized by the distinctive midrib. Considerable morphological and anatomical variation occurs between the small, distromatic species (e.g. D. delicatula, D. repens) and the larger robust, multilayered species (e.g. D. muelleri, D. acrostichoides).

Information contributed by: J. A. Phillips and R. J. King. The most recent alteration to this page was made on 19 Oct 2015 by M.D. Guiry.

Comments: Widely distributed in tropical to temperate seas.

NCBI Nucleotide Sequences

Numbers of names and species: There are 50 species (and infraspecific) names in the database at present, of which 35 have been flagged as currently accepted taxonomically.

Names: ('C' indicates a name that is currently 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):

Dictyopteris acrostichoides (J.Agardh) Bornet C 
Dictyopteris ambigua (Clemente) Cremades S 
Dictyopteris areschougii (J.Agardh) O.C.Schmidt C 
Dictyopteris australis f. karachiensis Nizamuddin & Saifullah C 
Dictyopteris australis (Sonder) Askenasy C 
Dictyopteris camiguinensis Tanaka C 
Dictyopteris cokeri (M.Howe) W.R.Taylor C 
Dictyopteris crassinervia (Zanardini) O.C.Schmidt C 
Dictyopteris delicatula J.V.Lamouroux C 
Dictyopteris diaphana W.R.Taylor C 
Dictyopteris dichotoma (Kuntze) O.Schmidt C 
Dictyopteris divaricata (Okamura) Okamura C 
Dictyopteris elongata J.V.Lamouroux P 
Dictyopteris fucoides Tanaka C 
Dictyopteris gracilis Womersley C 
Dictyopteris hauckiana Möbius S 
Dictyopteris hoytii W.R.Taylor C 
Dictyopteris integerrima Zanardini P 
Dictyopteris iyengarii P.Anand C 
Dictyopteris iyengeri Anand P 
Dictyopteris jamaicensis W.R.Taylor C 
Dictyopteris johnstonei N.L.Gardner S 
Dictyopteris jolyana E.C.Oliveira & R.P.Furtado C 
Dictyopteris justii J.V.Lamouroux C 
Dictyopteris kermadecensis (A.D.Cotton) O.C.Schmidt S 
Dictyopteris latiuscula (Okamura) Okamura C 
Dictyopteris ligulata (Suhr) O.C.Schmidt C 
Dictyopteris longifolia Papenfuss C 
Dictyopteris lucida M.A.Ribera Siguán, A.Gómez Garreta, Pérez Ruzafa, Barceló Martí & Rull Lluch C 
Dictyopteris macrocarpa (Areschoug) O.C.Schmidt C 
Dictyopteris membranacea Batters S 
Dictyopteris muelleri (Sonder) Reinbold C 
Dictyopteris nigricans Womersley C 
Dictyopteris pacifica (Yendo) I.K.Hwang, H.-S.Kim & W.J.Lee C 
Dictyopteris papenfussii Tanaka C 
Dictyopteris pardalis (Harvey) V.May S 
Dictyopteris plagiogramma (Montagne) Vickers C 
Dictyopteris polypodioides (A.P.De Candolle) J.V.Lamouroux C - type
Dictyopteris polypodioides var. minor (J.V.Lamouroux) Duby P 
Dictyopteris polypodioides var. angustifrons Montagne P 
Dictyopteris prolifera (Okamura) Okamura C 
Dictyopteris punctata Noda S 
Dictyopteris repens (Okamura) Børgesen C 
Dictyopteris secundispiralis J.A.Phillips C 
Dictyopteris serrata (Areschoug) Hoyt C 
Dictyopteris serrulata J.V.Lamouroux S 
Dictyopteris tripolitana Nizamuddin S 
Dictyopteris undulata Holmes C 
Dictyopteris woodwardia (R.Brown ex Turner) C.Agardh C 
Dictyopteris zonarioides Farlow S 

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: 29 December 2000 by M.D. Guiry

Verified by: 19 October 2015 by M.D. Guiry

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Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 25 March 2017.

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