Weeksia Setchell, 1901

Holotype species: Weeksia reticulata Setchell

Original publication and holotype designation: Setchell, W.A. (1901). Notes on algae, I. Zoe 5: 121-129.

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Description: Foliose, orbiculate to reniform, cleft or uncleft, with or without conspicuous veins radiating from base, with short stipe and discoid holdfast. Initially uniaxial, becoming multiaxial with maturity. Medulla of somewhat inflated, elongate cells and rhizoids, the latter from inner cortical cells. Cortex of subspherical cells, progressively smaller toward cuticle. Secondary pit connections lacking. Carpogonium terminating a distally recurved, usually unbranched, adventitious filament with enlarged distal cells. Fertilized carpogonium usually dividing, each product fusing with a cell of the carpogonial branch, then producing connecting filaments that contact a succession of auxiliary cells distally situated on separate, adventitious filaments between two or more enlarged, humerus-like cells. Cystocarps compact, of numerous small carposporangia, which released their spores through a carpostome. Spermatangia superficial, cut off by oblique walls. Tetrasporophyte isomorphic. Tetrasporangia small, cruciate, attached subbasally.

Information contributed by: S.C. Lindstrom. The most recent alteration to this page was made on 2023-10-07 by M.D. Guiry.

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: Lindstrom, S.C. & Scagel, R.F. (1987). The marine algae of British Columbia, northwern Washington, and southeast Alaska: division Rhodophyta (red algae), class Rhodophyceae, order Gigartinales, family Dumontiaceae, with an introduction to the order Gigartinales. Canadian Journal of Botany 65: 2202-2232, 99 figs.

Comments: A subtidal genus of the eastern North Pacific: Gulf of Alaska to Mexico.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=37223

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 07 October 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 24 November 2024