Eucheuma J.Agardh, 1847
Lectotype species: Eucheuma spinosum J.Agardh
Currently accepted name for the type species: Eucheuma denticulatum (N.L.Burman) Collins & Hervey
Original publication: Agardh, J.G. (1847). Nya alger från Mexico. Öfversigt af Kongl. Vetenskaps-Adademiens Förhandlingar, Stockholm 4: 5-17.
Request PDFType designated in: Schmitz, F. (1889). Systematische Übersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.
Description: Thallus coarse, cartilaginous, rigid when fresh, attached by a discoid holdfast and (commonly) by numerous secondary holdfasts. Axes terete, compressed or flattened, often with many spinous branches. Structure with or without a rhizoidal inner medulla; if the latter then with a pseudoparenchymatous medulla, otherwise with a pseudoparenchymatous outer medulla of spherical to ellipsoidal cells and a cortex of rows of filaments composed of small elongate cells. Cell walls containing a predominance of ?-carrageenan. Spermatangia in clusters on the outer cortex. Cystocarps ostiolate, forming on lateral determinate branches, infrequently on main axes. Carposporophytes consisting of large central fusion cells with radiating gonimoblasts and sterile filaments that connect with cells of the surrounding pericarp. Tetrasporangia scattered in the outer cortical layer, zonately divided.
Information contributed by: J.M. Huisman (2018).. The most recent alteration to this page was made on 2018-10-11 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Gender: This genus name is currently treated as neuter.
Most recent taxonomic treatment adopted: Huisman, J.M. (2018). Algae of Australia. Marine benthic algae of north-western Australia. 2. Red algae. pp. [i]-xii, 1-672, 189 figs. Canberra & Melbourne: ABRS & CSIRO Publishing.
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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,
organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA)
and intended to be published in CD format.
These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above.
The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.
Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.
Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=35110
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 11 October 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024
