MarBEF Data System - ERMS - Chorda Stackhouse, 1797

WoRMS taxon details

Chorda Stackhouse, 1797

AphiaID

144197 (urn:lsid:marinespecies.org:taxname:144197)

Classification

Status

accepted

Rank

Genus

Typetaxon

Chorda filum (Linnaeus) Stackhouse, 1797

Parent

Chordaceae Dumortier, 1822

Direct children (15)

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Species Chorda asiatica Sasaki & Kawai, 2007
Species Chorda borealis H.Kawai, T.Hanyuda & G.W.Saunders, 2019
Species Chorda filum (Linnaeus) Stackhouse, 1797
Species Chorda kikonaiensis H.Sasaki & H.Kawai, 2007
Species Chorda rigida H.Kawai & Arai, 2001
Species Chorda abbreviata Areschoug, 1875 accepted as Halosiphon tomentosus (Lyngbye) Jaasund, 1957
Species Chorda autumnalis Areschoug, 1862 accepted as Scytosiphon lomentaria (Lyngbye) Link, 1833
Species Chorda capensis Kützing, 1843 accepted as Chordariopsis capensis (C.Agardh) Kylin, 1940
Species Chorda durvillei (Bory de Saint-Vincent) Kützing, 1849 accepted as Colpomenia durvillei (Bory de Saint-Vincent) M.E.Ramírez, 1991
Species Chorda lessonii (Bory de Saint-Vincent) Kützing, 1849 accepted as Adenocystis utricularis (Bory) Skottsberg, 1907
Species Chorda lomentaria Lyngbye, 1819 accepted as Scytosiphon lomentaria (Lyngbye) Link, 1833 (synonym)
Species Chorda rimosa Montagne, 1842 accepted as Adenocystis rimosa (Montagne) Asensi, Delépine, Reviers & Rousseau, 2003 (synonym)
Species Chorda thrix (Stackhouse) Stackhouse, 1797 accepted as Chorda filum (Linnaeus) Stackhouse, 1797 (synonym)
Species Chorda tomentosa Lyngbye, 1819 accepted as Halosiphon tomentosus (Lyngbye) Jaasund, 1957 (Synonym)
Species Chorda minuta Kjellman, 1878 (uncertain)

Environment

marine, brackish

Original description

Stackhouse, J. (1797). Nereis britannica, continens species omnes fucorum in insulis Britannicis crescentium, descriptione latina et anglica, necnon iconibus ad vivum depictis: 2. [Nereis britannica, containing all the species of fuci, natives of the British coasts: with a description in English and Latin, and plates coloured from nature]. S. Hazard: Bath, UK. ix-xxiv, 31-70 pp., available online at http://img.algaebase.org/pdf/8CCB0C0302ef117257rP7701F495/17592.pdf
page(s): XVI [details]

Descriptive notes

LSID urn:lsid:algaebase.org:taxname:8033

LSID urn:lsid:algaebase.org:taxname:8033 [details]

Description Annual, growing on small shells or epilithic, subtidal. Sporophyte gregarious on small discoid holdfast, up to several...

Description Annual, growing on small shells or epilithic, subtidal. Sporophyte gregarious on small discoid holdfast, up to several meters in length, olive to brown, cord-shaped, cylindrical, solid when young later becoming hollow, composed of 3-8 cell rows of medullary layer, 4-6 celled paraphyses and narrow obovate unilocular sporangia. Trumpet-shaped hyphae present in the central part of thalli. Phaeophycean hairs (C. filum) or assimilatory hairs (C. tomentosa) abundant. No special mucilagenous organs. Chloroplasts many, discoid, without pyrenoids. Intercalary meristem present or absent. Plurilocular sporangia not formed on erect thalli. Life history heteromorphic between macroscopic polystichous sporophyte and branched filamentous gametophyte. Gametophytes oogamous, dioecious but sexually monomorphic (C. filum) or monoecious (C. tomentosa). Zoospores from unilocular sporangia teardrop-shaped, biflagellated with longer anterior flagellum, with a stigma. Germination unipolar forming emptied embryospore. Antheridia formed on fertile branches, often in cluster. Sperm almost colorless containing several reduced chloroplasts without stigma, with longer posterior flagella. Oogonia terminal on fertile branches. Zygotes develop attached at the mouth of the oogonia. First several divisions occur transversely, then become polystichous and terete. Sexual pheromone reported to be multifidene in C. tomentosa. [details]

Taxonomic citation

Guiry, M.D. & Guiry, G.M. (2024). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Chorda Stackhouse, 1797. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=144197 on 2024-11-22

Taxonomic edit history

Date

action

2004-12-21 15:54:05Z

created

Guiry, Michael D.

Licensing

The webpage text is licensed under a Creative Commons Attribution 4.0 License

[taxonomic tree]

original description Stackhouse, J. (1797). Nereis britannica, continens species omnes fucorum in insulis Britannicis crescentium, descriptione latina et anglica, necnon iconibus ad vivum depictis: 2. [Nereis britannica, containing all the species of fuci, natives of the British coasts: with a description in English and Latin, and plates coloured from nature]. S. Hazard: Bath, UK. ix-xxiv, 31-70 pp., available online at http://img.algaebase.org/pdf/8CCB0C0302ef117257rP7701F495/17592.pdf
page(s): XVI [details]

basis of record Guiry, M.D. (2001). Macroalgae of Rhodophycota, Phaeophycota, Chlorophycota, and two genera of Xanthophycota, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 20-38 (look up in IMIS) [details]

additional source Guiry, M.D. & Guiry, G.M. (2024). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]