WoRMS taxon details

Chorda Stackhouse, 1797

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

accepted
Genus
marine
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]. <em>S. Hazard: Bath, UK.</em> ix-xxiv, 31-70 pp., available online at http://img.algaebase.org/pdf/8CCB0C0302ef117257rP7701F495/17592.pdf
page(s): XVI [details]  OpenAccess publication 
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]
Guiry, M.D. & Guiry, G.M. (2020). 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: http://www.marinespecies.org/aphia.php?p=taxdetails&id=144197 on 2020-08-10
Date
action
by
2004-12-21 15:54:05Z
created

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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]. <em>S. Hazard: Bath, UK.</em> ix-xxiv, 31-70 pp., available online at http://img.algaebase.org/pdf/8CCB0C0302ef117257rP7701F495/17592.pdf
page(s): XVI [details]  OpenAccess publication 

basis of record Guiry, M.D. (2001). Macroalgae of Rhodophycota, Phaeophycota, Chlorophycota, and two genera of Xanthophycota, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>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,</i> 50: pp. 20-38 (look up in IMIS[details]   

additional source Guiry, M.D. & Guiry, G.M. (2020). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> , available online at http://www.algaebase.org [details]   
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
 

From editor or global species database
LSID urn:lsid:algaebase.org:taxname:8033 [details]

From other sources
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]
LanguageName 
Japanese ツルモ属  [details]