Antithamnionella Lyle, 1922

Lectotype species: Antithamnionella sarniensis Lyle

Currently accepted name for the type species: Antithamnionella ternifolia (Hooker f. & Harvey) Lyle

Original publication: Lyle, L. (1922). Antithamnionella, a new genus of algae. J. Bot. 60: 346-350, 6 figs.

Type designated in: Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.

Description: Thallus filamentous, ecorticate, with prostrate axes bearing erect branches, the latter with 1– 4 whorl branches on each axial cell; whorl branches themselves branched or unbranched. Vesicular cells usually present, ellipsoidal, lateral on central or proximal cells of whorl branches, covering only the bearing cell, not associated with short specialised branches. Spermatangia on branched fertile branches. Carposporophytes subterminal on indeterminate branches, with lobed or elongate gonimolobes with sequentially maturing carposporangia; growth of bearing axis ceasing on development of the carposporophyte. Involucral filaments absent, but some vegetative branches loosely covering the carposporophyte. Tetrasporangia ellipsoidal or subspherical, sessile or pedicellate, cruciately or tetrahedrally divided.

Information contributed by: Huisman (2018). The most recent alteration to this page was made on 2018-10-08 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Athanasiadis, A. (1996). Morphology and classification of the Ceramioideae (Rhodophyta) based on phylogenetic principles. Opera Botanica 128: [1]-216, 108 figs.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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. 08 October 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 23 May 2024

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