Aglaothamnion diaphanum L'Hardy- & 1991
Aglaothamnion diaphanum L'Hardy-Halos & Maggs 1991: 468, figs 1-41
Published in: 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.
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.
Holotype locality: St John’s 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.
Origin of species name
Adjective (Latin), colourless and nearly or quite transparent, diaphanous (Stearn 1973).
No synonyms are currently included in AlgaeBase.
This is a marine species.
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.
Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. II. pp. , 763-1504. Thessaloniki: Published and distributed by the author.
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.
Created: 17 May 1996 by M.D. Guiry
Verified by: 09 February 2017 by M.D. Guiry
Accesses: This record has been accessed by users 1207 times since it was created.
Verification of data
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(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
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 September 2021.