Aglaothamnion diaphanum L'Hardy-Halos & Maggs
Publication details
Aglaothamnion diaphanum L'Hardy-Halos & Maggs 1991: 468, figs 1-41
Original publication: L'Hardy-Halos, M.-T. & Maggs, C.A. (1991). A novel life history in Aglaothamnion diaphanum sp. nov. (Ceramiaceae, Rhodophyta) from the British Isles and Brittany. Phycologia 30: 467-479.
Download PDF
Type species
The type species (holotype) of the genus Aglaothamnion is Aglaothamnion furcellariae (J.Agardh) Feldmann-Mazoyer.
Status of name
This name is of an entity that is currently accepted taxonomically.
Origin of species name
Adjective (Latin), colourless and nearly or quite transparent, diaphanous (Stearn 1973).
Synonym(s)
No synonyms are currently included in AlgaeBase.
General environment
This is a marine species.
Description
Plants solitary or in small groups arising from discoid filamentous holdfast or creeping axes, usually less than 5 mm in length, occasionally up to 10 mm long, of a delicate texture and pale pink in colour; main axes lacking adherent cortex but forming loose rhizoidal filaments that attach to the substratum; branching in a single plane, regularly alternate, distichous, first cell of lateral branches always bearing an adaxial branchlet, apices corymbose; all cells uninucleate, containing a few ribbon-like plastids arranged longitu dinally; occasional cells of thalli striated in ap pearance, densely packed with spiny structures of unknown nature. Dioecious; spermatangia and bisporangia on separate plants or occasionally mixed on same thallus; spermatangial branchlets adaxial, 1-3 per cell, consisting of 3-4 cells bearing sper matangia in groups of two to four, spermatangial nuclei in median position; carpogonial branch 4-celled, post-fertilization events unknown; bisporangia adaxial, normally sessile, 42-58 x 22-36 µm, obliquely divided; released bispores giving rise in culture to further bisporophytes that may also form spermatangia.
Distribution by country
Type information
Holotype locality: St Johns Point, Co. Donegal, Ireland Holotype: C.A.Maggs; 28 viii 1990; PC (Maggs & Hommersand 1993: 95). Notes: Holotype is a bisporophyte. Isotypes in PC, BM, GALW, O.
Detailed distribution with sources
(as Aglaothamnion diaphanum L'Hardy-Halos & Maggs)
Ireland: Donegal (L'Hardy-Halos & Maggs 1991, Maggs & Hommersand 1993, Morton 2003), Kerry (L'Hardy-Halos & Maggs 1991, Maggs & Hommersand 1993).
Europe: Britain (L'Hardy-Halos & Maggs 1991, Maggs & Hommersand 1993, Hardy & Guiry 2003), France (L'Hardy-Halos & Maggs 1991, Maggs & Hommersand 1993, Dizerbo & Herpe 2007, Anon. 2012), Ireland (Maggs & Hommersand 1993, Guiry 2012), Spain (Veiga, Cremades & Bárbara 1995, Veiga, Cremades & Bárbara 1998, Veiga, Cremades & Bárbara 1998, López Varela 2000, Bárbara et al. 2005, Cires Rodriguez & Cuesta Moliner 2010).
South America: Brazil (Creed et al. 2010).
Key references
Maggs, C.A. & Hommersand, M.H. (1993). Seaweeds of the British Isles. Volume 1. Rhodophyta. Part 3A. Ceramiales. pp. [i]-xv, 1-444, 129 figs, map. London: HMSO.
SAG Cultures
SAG Cultures may be viewed at http://sagdb.uni-goettingen.de/showstrains.php?genus=Aglaothamnion&species=diaphanum
SCCAP Cultures
Cultures from the Scandinavian Culture Collection of Algae at the University of Copenhagen (SCCAP) and Protozoa may be viewed at http://www.sccap.dk/search/algaebase.asp?Genus=Aglaothamnion&Species=diaphanum
Created: 17 May 1996 by M.D. Guiry
Verified by: 28 May 2011 by M.D. Guiry
Accesses: This record has been accessed by users 1014 times since it was created.
References
(Please note: only references with the binomials in the title are included. The information is from the Literature database.)
L'Hardy-Halos, M.-T. & Maggs, C.A. (1991). A novel life history in Aglaothamnion diaphanum sp. nov. (Ceramiaceae, Rhodophyta) from the British Isles and Brittany. Phycologia 30: 467-479.
Veiga, A.J., Cremades, J. & Bárbara, I. (1995). Aglaothamnion diaphanum (Ceramiales, Rhodophyta) en las costas de la Peninsula Ibérica. Anales Jardín Botánico de Madrid 52(2): 211-212, 1 fig.
Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=453
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2013.
AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 24 May 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:77067
