Amphithallia Athanasiadis, 2019

Holotype species: Amphithallia crassiuscula (Kützing) Athanasiadis

Original publication and holotype designation: Athanasiadis, A. (2019). Amphithallia, a genus with four-celled carpogonial branches and connecting filaments in the Corallinales (Rhodophyta). Marine Biology Research 15(1): 13-25, 6 figs, 1 table.

Description: "...differing from Synarthrophyton in being an obligate epiphyte on Gelidium capense and in possessing: 1) monoecious gametophytes (dioecious or hermaphroditic in Synarthrophyton), four-celled carpogonial branches (two or three-celled in Synarthrophyton), 2) sterile cells borne on supporting cells (on hypogenous cells in Synarthrophyton), 3) straight canals of multiporate roofs lined by non-differentiated cells (conical canals lined by differentiated cells along the base in Synarthrophyton)."

Information contributed by: Original diagnosis. The most recent alteration to this page was made on 2024-02-23 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: Athanasiadis, A. & Ballantine, D.L. (2024). Anatomy and classification of the Mesophyllaceae (Corallinales, Rhodophyta), based on phylogenetic principles. Smithsonian Contributions to Botany 118: [i]-xii, [1]-216, 83 figures, 6 tables.

Comments: The genus name refers "... to the bilateral thallus organization."

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=52691

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 23 February 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 30 April 2024