Georgiella Kylin, 1956

Holotype species: Georgiella confluens (Reinsch) Kylin

Original publication and holotype designation: Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.

Description: Thallus to 50 cm tall, abundantly branched with indeterminate branches, sometimes appearing subdichotomous, and determinate branchlets, distichous, flattened. Apical cell obliquely divided alternately to left and right, apex not overtopped by lateral branches. Axes corticated from near apex with ascending and descending filaments bearing transverse branches. Cells uninucleate. Procarps borne near apex of fertile branchlet with 4-celled carpogonial branch on first-formed of two opposite pericentral cells. Auxiliary cells cut off from both pericentral cells, one or both fusing by means of connecting cells with carpogonium to produce 1 or 2 carposporophytes each with globose clusters of carposporangia protected by tetrastichous involucre of lateral branches from below. Spermatangia in superficial sori. Tetrasporangia usually terminal on short filaments on branchlets, tetrahedrally- or irregularly-divided.

Information contributed by: E.M. Wollaston. The most recent alteration to this page was made on 2015-01-13 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Hommersand, M.H., Freshwater, D.W., Lopez-Bautista, J.M. & Fredericq, S. (2006). Proposal of the Euptiloteae Hommersand et Fredericq, trib. nov. and transfer of some southern hemisphere Ptiloteae to the Callithamnieae (Ceramiaceae, Rhodophyta). Journal of Phycology 42: 203-225.

Comments: Known only from cold seas of Antarctic region including the Scotia Arc, Antarctic Peninsula and East Antarctica, from 5 to 15(-23) m deep.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=42686

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 13 January 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024