Distromium Levring, 1940
Holotype species: Distromium skottsbergii Levring
Original publication and holotype designation: Levring, T. (1940). Die Phaeophyceengattungen Clanidophora, Distromium und Syringoderma. Kungliga Fysiografiska Sällskapets i Lund Förhandlingar 10(20): 217-227, 5 figs.
Request PDFDescription: Thalli erect or decumbent from a rhizoidal holdfast, up to 8 cm long, flabellate, entire or lacerate, 0.2-1.2 cm across at the apices, or multifid with narrow (up to 1.5 mm broad) branches from the base. Growth initiated by a row of many apical cells. Thallus becoming 2 cells thick immediately below the apical cells and remaining 2 cells thick throughout. Cells with numerous discoid chloroplasts. Hairs present or absent, in concentric zones or scattered tufts. Sporangia in concentric or scattered indusiate sori on the upper thallus surface, ovoid to pryiform, 150-250 mm in diameter, with or without a basal stalk cell, dividing to form 4 spores. Antheridial sori (known only from male plants of D. multifidum) on terminal segments, 400-600 mm long by 200-300 mm across. Oogonia unknown.
Information contributed by: J. A. Phillips and R. J. King. The most recent alteration to this page was made on 2020-09-19 by Salvador Valenzuela Miranda.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156, 1 fig., 1 table.
Comments: Japan, southern and south eastern Australia, New Zealand, South America (Juan Fernandez Is.).
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=41297
Citing AlgaeBase
Cite this record as:
Salvador Valenzuela Miranda in Guiry, M.D. & Guiry, G.M. 19 September 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024
