Halymenia C.Agardh, 1817, nom. cons.

Lectotype species: Halymenia floresii (Clemente) C.Agardh

Original publication: Agardh, C.A. (1817). Synopsis algarum Scandinaviae, adjecta dispositione universali algarum. pp. [i]-xl, [1]-135. Lundae [Lund]: Ex officina Berlingiana.

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Type designated in: Schmitz, F. (1889). Systematische Übersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.

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Description: Thallus erect, blade-like, with a discoid holdfast, with or without a short stipe. Blades branched or not. Structure multiaxial, with a medulla of sparse, loosely interwoven, periclinally directed filaments, as well as anticlinal filaments that traverse the medulla; refractive or ganglionic cells usually present. Cortex of dichotomously divided filaments, occasionally forming a loose pseudoparenchyma. Spermatangia arising from outer cortical cells. Carpogonal branches and auxiliary cell branches in spatially separate ampullae. Cystocarps immersed, with a lax filamentous pericarp. Tetrasporangia formed in the outer cortex, cruciately or decussately divided. Emended by Rodríguez-Prieto & S.-M. Lin in Rodríguez-Prieto et al., 2018: 534.

Information contributed by: J. Huisman & O. De Clerck (2018).. The most recent alteration to this page was made on 2024-02-22 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.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=18

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 22 February 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 15 June 2024

Currently in AlgaeBase: