Spiraulax Kofoid, 1911
Holotype species: Spiraulax jolliffei (G.Murray & Whitting) Kofoid
Original publication and holotype designation: Kofoid, C.A (1911). Dinoflagellata of the San Diego region, V. On Spiraulax, a new genus of the Peridinida. University of California Publications in Zoology 8(6): 295-300, plate 19.
Request PDFDescription: Unicellular biflagellate, heterodynamic large (120-150 µm long) cells with cell wall composed of cellulosic plates with well visible pores. Plate formula:Po, 4', 1a, 6", 6c, 6s, 6"', 1p, 1"" (after Sournia 1986), for further discussion see Balech 1988, Carbonell-Moore 1996b). Cells circular in apical and antapical view but biconical in ventral view. The cingulum is median, slightly displaced. The sulcus extends only slightly into the episome but is deeply impressed on the hyposome, nearly reaching the antapex. Thecal apical plates very often split giving the characteristic view of the species. Chloroplasts present, cyst formation and sexual reproduction so far not reported. Habitat:Marine plankton of oceanic warm waters, in all major oceans.
Information contributed by: M. Elbrächter. The most recent alteration to this page was made on 2024-03-18 by E.A. Molinari Novoa.
Taxonomic status: This name is of an entity that is currently accepted taxonomically.
Gender: This genus name is currently treated as feminine.
Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.
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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera,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=44693
Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 18 March 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 April 2024
