Pelvetiopsis N.L.Gardner, 1910

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(6): 121-136, pls 16, 17.

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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 2017-01-24 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Neiva, J., SerrĂ£o, 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.

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

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 24 January 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 08 June 2023

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