Hommersandia G.I.Hansen & S.C.Lindstrom, 1984

Holotype species: Hommersandia maximicarpa G.I.Hansen & S.C.Lindstrom

Currently accepted name for the type species: Hommersandia palmatifolia (Tokida) Perestenko ex Selivanova & Zhigadlova

Original publication and holotype designation: Hansen, G.I. & Lindstrom, S.C. (1984). A morphological study of Hommersandia maximicarpa gen et sp. nov. (Kallymeniaceae, Rhodophyta) from the North Pacific. Journal of Phycology 20: 476-488.

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Description: Erect, flat, flabellately lobed to one to several orders. Stipe short. Holdfast small, discoid. Perennial. Medulla thin, filamentous, some cells refractive. Subcortex of large elliptical cells, becoming progressively smaller toward cuticle. Secondary pit connections present. Carpogonial branch 3-celled, borne on supporting cell together with up to 4 clavate to irregularly lobed subsidiary cells. Post-fertilization fusion cell involving supporting and subsidiary cells, initiating numerous branched, septate connecting filaments, which contact auxiliary cells with up to 4 subglobose subsidiary cells and moniliform adventitious branches or moniliform branches only. Gonimoblast filaments developing from moniliform branches and producing branched chains of carposporangia. Cystocarps embedded, large, diffuse, elliptical. Spermatangia undescribed. Tetrasporophyte isomorphic. Tetrasporangia irregularly cruciate, scattered in cortex, attached laterally to subsurface cortical cells.

Information contributed by: S.C. Lindstrom. The most recent alteration to this page was made on 2014-03-21 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: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.

Comments: Subtidal. Known only from the North Pacific: Aleutian Islands (Alaska) to Vancouver Island (British Columbia).

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=42642

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 21 March 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024