153,600 species and infraspecific names are in the database, 20,980 images, 59,403 bibliographic items, 411,227 distributional records.

Wittrockiella Wille, 1909

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Ulvophyceae
Order Cladophorales
Family Pithophoraceae

Holotype species: Wittrockiella paradoxa Wille

Currently accepted name for the type species: Wittrockiella amphibia (Collins) C.Boedeker & G.I.Hansen

Original publication and holotype designation: Wille, N. (1909). Algologische Notizen XV. Über Wittrockiella nov. gen. Nytt Magazin for Naturvidenskaberne 47: 209-225, 4 pls.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Škaloud, P., Rindi, F., Boedeker, C. & Leliaert, F. (2018). Süßwasserflora von Mitteleuropa. Freshwater flora of central Europe. Bd 13. Chlorophyta: Ulvophyceae (Krienitz, L. ed.). pp. [i]-vii, [1]-288, 182 figs. Berlin: Springer Spektrum.

Description: Thalli with heterotrichous organisation. A prostrate system of branched uniseriate filaments gives rise to an upright system of branched, uniseriate filaments. Cells in the upright systems tend to be nearly cylindrical, while those in the prostrate system are more irregular in shape. The apical cells of the upright filaments are typically more densely pigmented. Branches are subterminally inserted with delayed cell wall formation. The diameter of the filaments varies greatly between species and the overall range is from 10 to 750 ?m. Reproductive structures are unspecialised cells that transform into aplanosporangia, zoosporangia or gametangia that release aplanospores or zoids through an elongated exit tube (Fig. 140c). Such reproductive cells have not yet been found in some species. Enlarged cells are common and may be either immature sporangia or akinetes. Colourless non-septate hairs are rarely formed and have only been observed in nutrient-depleted cultures. The only attachment structures that are formed are secondary rhizoids, which are typically much thinner than the main filaments and consist of long cells often with a sinuous outline. Rhizoids are typically inserted terminally but lateral rhizoids also occur and can end in haptera.

Information contributed by: Skaloud <i>et al.</i> (2018).. The most recent alteration to this page was made on 17 Mar 2018 by M.D. Guiry.

Comments: Wittrockiella amphibia (formerly W. paradoxa) is widely distributed in temperate to tropical (rarely) areas (NW Europe, Pacific and Atlantic coasts of North America); occurring in oligohaline or mesohaline areas of saltmarshes, epiphytic on living or decaying saltmarsh phanerogams, or more rarely free-living on mud among other saltmarsh algae. Wittrockiella salina known only from New Zealand, differing from W. amphibia in lacking rhizoidal thalli and having larger cells. The different forms of Wittrockiella amphibia apparently environmentally induced; rhizoidal forms from nature develop cladophoroid habit in culture.

Numbers of names and species: There are 10 species names in the database at present, as well as 1 infraspecific names. Of the species names, 9 have been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

References
Boedeker, C., O'Kelly, C.J., Star, W. & Leliaert, F. (2012). Molecular phylogeny and taxonomy of the Aegagropila clade (Cladophorales, Ulvophyceae), including the description of Aegagropilopsis gen. nov. and Pseudocladophora gen. nov. Journal of Phycology 48(3): 808-825.

Boedeker, C., O'Kelly, C.J., West, J.A., Hanyuda, T., Neale, A., Wakana, I., Wilcox, M.D., Karsten, U., & Zuccarello, G.C. (2017). Molecular phylogeny and taxonomic revision of the genus Wittrockiella (Pithophoraceae, Cladophorales), including the descriptions of W. australis sp. nov. and W. zosterae sp. nov.. Journal of Phycology 53(3): 522-540, 6 fig., 2 tables.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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.

Created: 28 December 2000 by M.D. Guiry

Verified by: 17 March 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=38404

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 17 November 2018.

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