Gelidiella Feldmann & G.Hamel, 1934

Holotype species: Echinocaulon spinellum Kützing

Currently accepted name for the type species: Gelidiella acerosa (Forsskål) Feldmann & Hamel

Original publication and holotype designation: Feldmann, J. & Hamel, G. (1934). Observations sur quelques Gélidiacées. Revue Générale de Botanique 46: 528-549, 11 figs.

Request PDF

Description: Thallus with prostrate and erect axes, generally forming spreading tufts; some species to 7–10 cm tall, but mostly less than 2 cm, dark red to orange or yellow (often variable within a single thallus), attached by clusters of rhizoids. Erect axes slender, wiry, cartilaginous, cylindrical or slightly compressed, variously branched but distichous when well developed. Apices with a prominent apical cell, but axial filament becoming obscure; medulla of numerous longitudinal filaments and a cortex of 1–3 layers of pigmented ellipsoidal cells. Life history probably triphasic, with isomorphic gametophytes and tetrasporophytes; most species known only with tetrasporangia. Cystocarps reported but not well known. Spermatangia in subterminal sori, cut off from outer cortical cells. Tetrasporangia in swollen often elongate apical portions of axes or short stichidioid branches, irregularly arranged, lying within the inner cortex and outer medulla, tetrahedrally, decussately-cruciately or irregularly divided.

Information contributed by: Huisman, Boo & Boo (2018).. The most recent alteration to this page was made on 2018-09-26 by M.D. Guiry.

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

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.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=32963

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 26 September 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 December 2024