Geitleria I.Friedmann, 1955

Holotype species: Geitleria calcarea Friedmann

Original publication and holotype designation: Friedmann, I. (1955). Geitlerea calcarea n. gen. et n. sp. A new atmophytic lime-incrusting blue-green alga. Botaniska Notiser 108: 439-445.

Description: Filamentous-thallose; thallus loosely tufted, to 2 mm thick, with coiled, creeping or erect filaments, irregularly laterally and pseudodichotomously true branched (V- and T-branching types), without prostrate basal system and without morphological differentiation into main and lateral branches. Sheaths firm, intensely lime-encrusted, colorless, containing a single trichome. Trichomes uniseriate, moniliform, indistinctly or intensely constricted at crosswalls. Cells cylindrical or barrel-shaped, sometimes with own, narrow special envelopes and granu1ar, pale grayish-green content, with distinct chromatoplasm and solitary granules; end cells sometimes slightly widened-rounded. Thylakoids distributed over the whole cell content. Heterocytes and akinetes absent. Cell division crosswise or lengthwise (before true branching). Reproduction by hormogonia (fractured segments of filaments).

Information contributed by: J. Komárek & M.D. Guiry. The most recent alteration to this page was made on 2023-03-06 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: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.

Comments: Aerophytic, epilithic on calcareous rocks in caves. The type species is probably distributed worldwide (Israel, France, Romania, Spain, Yugoslavia, USA, Cook Islands), but is very disjunct, occurring only under very special ecological conditions (caves of a special character, in deepest and least illuminated areas of the photic zone).

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=46474

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 16 April 2024