153,631 species and infraspecific names are in the database, 20,983 images, 59,437 bibliographic items, 412,634 distributional records.

Nautocapsa H.Ettl & O.Ettl, 1959

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Chlorophyceae
Order Chlamydomonadales
Family Palmellopsidaceae

Holotype species: Nautocapsa neustophila (Czosnowski) H.et O.Ettl

Original publication and holotype designation: Ettl, H. & Ettl, O. (1959). Zur Kenntnis der Klasse Volvophyceae. II. Neue oder wenig bekannte Chlamydomonadalen. Archiv für Protistenkunde 104: 51-112, 4 pls.

Taxonomic status: currently recognized as a distinct genus.

Description: Solitary cells embedded in conspicuous, slightly colored, yellow ochraceous, mucilaginous envelope, the latter often with an expanded lip near water surface and open end at base. Vegetative cells 10-15 x 6-7.5 &m, cylindrical and nonflagellated, with rounded ends and papilla at apical end. Cell walls smooth and thin. Cells uninucleate with two apical contractile vacuoles. Single chloroplast cup-shaped, with stigma and conspicuous, submedian pyrenoid surrounded by starch sheath. Asexual reproduction by bi- or quadriflagellate zoospores; 4 spores per sporangium; released by rupture of sporangial wall and migration of swarmers from common envelope. Sexual reproduction unknown Nautocapsa planktonic in freshwater, associated with water surface; reported only from Europe.

Information contributed by: D. Garbary & A. Couté. The most recent alteration to this page was made on 2 Jul 2012 by Michael Guiry.

Numbers of names and species: There is only one species or infraspecific name in the database at present, which has 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.

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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.

Created: 17 September 2004 by Robert Wilkes

Verified by: 02 July 2012 by Michael Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=47386

Citing AlgaeBase
Please cite this record as:
Michael 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 21 November 2018.

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