Gonatozygon De Bary, 1856
Lectotype species: Gonatozygon monotaenium De Bary
Original publication: Bary, A. de (1856). Zu Gonatozygon monotaenium de Bary. Rabenh. Algen Mitteleurop. Dec. 54 No. 539. Hedwigia 1: 105-106.
Request PDFType designated in: Guiry, M.D. (2013). Taxonomy and nomenclature of the Conjugatophyceae (=Zygnematophyceae). Algae. An International Journal of Algal Research 28: 1-29.
Description: Cells solitary or in short filaments, medium sized to large (48-759 um long), elongate-cylindric to elongate fusiform (length 7-40 times width), with truncate ends. Cell wall smooth or with scattered granules, setae or spines; wall in some species with girdle-bands. Ultrastructurally, cell wall two-layered: an outer perforated layer (including any granules or spines), and an inner, more or less continuous, layer. Chloroplasts 1-2 per cell, axial ribbon-like with row of up to 16 pyrenoids. Nucleus in middle, beside chloroplast, or between chloroplasts if two present. Asexual reproduction by transverse cell division. Sexual reproduction by conjugation known for 3 species. Gametangia geniculate before narrow conjugation tube forms. Zygospores in conjugation tube, spherical, smooth-walled. Gonatozygon cosmopolitan, in acidic, oligotrophic lakes and ponds, or in Sphagnum bogs.
Information contributed by: J.F. Gerrath. The most recent alteration to this page was made on 2023-09-21 by M.D. Guiry.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=43555
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 21 September 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024
