Erythroclonium Sonder, 1853
Lectotype species: Erythroclonium muelleri Sonder
Original publication: Sonder, O.G. (1853). Plantae Muellerianae. Algae. Linnaea 25: 657-703.
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: Plants of the largest species reach 25 cm in length. Thalli are erect from a crustose holdfast, terete, and conspicuously jointed or segmented, the branching being associated with the segment nodes. Apices are uniaxial, each central axial cell giving rise to two periaxial cells. Cross sections display a broad, filamentous medulla in which the axial filament is prominent, surrounded by a shallow cortex of subisodiametric cells. Carpogonial branches are 3- or 4 celled, the basal 1-2 cells at times bearing sterile cells or filaments. Generally 1 (1-3 in E. angustatum Sonder) connecting filament arises from the fertilized carpogonium. Ostiolate cystocarps are embedded in the branches and are composed of a large fusion cell lateral to the central axial filament, surrounded by very few layers of sterile gonimoblast cells bearing chains of carposporangia. Scattered sterile filaments connect the carposporophyte to the gametophyte. A loose filamentous sheath encircles the mature gonimoblast. Spermatangia are scattered in clusters over the young branches, and tetrasporangia are laterally attached to bearing cells.
Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2018-09-25 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
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.
Comments: The genus has been monographed (as a member of the Rhabdoniaceae) by Min-Thein and Womersley (1976). Gabrielson and Hommersand (1982) transferred it to the Solieriaceae and the Tribe Solierieae. Distribution: The entire genus is endemic to southern Australia, where it occurs on subtidal rocks.
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=35107
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 25 September 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 05 December 2024
