Perithallis Athanasiadis, 2021

Holotype species: Perithallis chatamensis (Foslie) Athanasiadis

Original publication and holotype designation: Athanasiadis, A. (2021). Canal differentiation in multiporate conceptacles of Mesophyllaceae (Corallinales, Rhodophyta), with recognition of Thallis gen. nov. from South Africa, Perithallis gen. nov., Printziana gen. nov. and Sunesonia gen. nov. from southern Australia-New Zealand-Chatham. Marine Biology Research 17: 905-945.

Description: New genus of Mesophyllaceae (Corallinales), differing from Thallis (described herein) in possessing a ventral diminutive perithallium (aniso-bilateral thallus organization) and a predominantly coaxial hypothallium, and in lacking a prominent fusion cell in carposporangial conceptacles and embedded conceptacles. Thallis and Perithallis differ from other genera of Mesophyllaceae in developing basally branched pore filaments in canals of multiporate conceptacles, the filaments being 4–5-celled, provided with elongate sub-basal cells, lacking epithallial cells and terminating below the roof surface.

Information contributed by: Original description.. The most recent alteration to this page was made on 2024-02-24 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.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=54482

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 24 February 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 12 May 2024