152,930 species and infraspecific names are in the database, 20,947 images, 59,150 bibliographic items, 408,271 distributional records.

Pelvetiopsis N.L.Gardner, 1910

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Phaeophyceae
Subclass Fucophycidae
Order Fucales
Family Fucaceae

Holotype species: Pelvetiopsis limitata (Setchell) N.L.Gardner

Original publication and holotype designation: Gardner, N.L. (1910). Variations in nuclear extrusion among the Fucaceae. University of California Publications in Botany 4: 121-136.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Neiva, J., Serrão, E.A., Anderson, L., Raimondi, P.T., Martins, N., Gouveia, L., Paulino, C., Coelho, N.C., Miller, K.A., Ladah, L.B. & Pearson, G.A. (2017). Cryptic diversity, geographical endemism and allopolyploidy in NE Pacific seaweeds. BMC Evolutionary Biology 17(30): 1-12, 4 figs, 2 tables.

Description: Thalli perennial, consisting of a conical holdfast with 1-many erect, dichotomous branches. Branches cylindrical at base, flattened or cylindrical above with inconspicuous cryptostomata and lacking a midrib. Tips of ultimate dichotomies swollen, forming distinct receptacles bearing numerous monoecious conceptacles. Contents of oogonia becoming 8-nucleate after meiosis, the oogonial protoplast dividing into 2 very unequal parts, the very large distal portion containing one nucleus and released as a functional egg, the small 7-nucleate portion disintegrating after release. Antheridia producing 128 antherozoids resembling the sperm of Fucus but lacking an eyespot.

Information contributed by: M.D.Guiry. The most recent alteration to this page was made on 24 Jan 2017 by M.D. Guiry.

Comments: Marine, growing on surf-exposed rock in the upper littoral above the Fucus zone, Vancouver I. to central California.

Numbers of names and species: There are 4 species names in the database at present, as well as 1 infraspecific names. Of the species names, 4 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.

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: 24 January 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=36977

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 23 September 2018.

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