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Aglaothamnion diaphanum L'Hardy-Halos & Maggs 1991

Publication details
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.
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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.

Type information
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).

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.

Detailed distribution with sources (Click to Load)

Key references
Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. II. pp. [2], 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
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 September 2021.

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