Platoma Schousboe ex F.Schmitz, 1894, nom. cons.

Holotype species: Platoma cyclocolpum (Montagne) F.Schmitz

Publication details: Schousboe ex F.Schmitz, 1894: 627

Original publication and holotype designation: Schmitz, F. (1894). Kleinere Beiträge zur Kenntniss der Florideen. Nuova Notarisia 5: 608-635.

Precise date of publication: April 1894

Description: Thallus (gametophyte) erect, flattened, occasionally mucilaginous or cartilaginous, with broad unbranched or variously branched blades, uncalcified. Structure multiaxial, with a medulla of loose filaments and a cortex of dichotomously divided anticlinal filaments. Vesicular cells generally present in the inner cortex. Subsidiary auxiliary cells formed from cells of the cortical fascicle adjacent to the supporting cell. Connecting filaments formed from subsidiary auxiliary cells, meandering through the thallus to intercalary generative auxiliary cells. Gonimoblast arising from a diploidised generative auxiliary cell, composed entirely of carposporangia.

Information contributed by: J. Huisman (2018).. The most recent alteration to this page was made on 2024-11-24 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 neuter.

Most recent taxonomic treatment adopted: Huisman, J.M. (2018). Algae of Australia. Marine benthic algae of north-western Australia. 2. Red algae. pp. [i]-xii, 1-672, 189 figs. Canberra & Melbourne: ABRS & CSIRO Publishing.

Nomenclatural note
The name Platoma is here treated as neuter; see Athanasiadis (2000). The following is from Taxon vol. 52, p. 340: "(1469) Conserve the name Platoma (Rhodophyta) as being of neuter gender (proposed by A. Athanasiadis in Taxon 49: 809. 2000). Votes 12 : 0 : 2 (recommended). The author of the proposal convincingly shows that in current literature Platoma has been given both feminine and neuter genders. The Committee agrees that a definite choice of the gender should be made by conservation and therefore recommends that the name Platoma be conserved as being of neuter gender. However, we cannot accept the change of authorship proposed by the author since we can see nothing like an indirect reference (even cryptic) to Nemastoma sect. Platoma J. Agardh in F. Schmitz 1889. Therefore the Committee recommends conservation of Platoma as being of neuter gender, with its ING authorship: Platoma Schousb. ex F. Schmitz in Nuova Notarisia 5: 627. Apr 1894." - (11 March 2014) - M.D. Guiry

Verification of Data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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=33233

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 24 November 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 17 May 2025