Lambia Delépine, 1967
Holotype species: Lambia antarctica (Skottsberg) Delépine
Original publication and holotype designation: Delépine, R. (1967). Sur un nouveau genre de Chlorophycées antarctiques, Lambia. Compte Rendu Hebdomadaire des Séances de l’Académie des Sciences. Paris. Série D 264(D): 1410-1413.
Taxonomic status: currently recognized as a distinct genus.
Gender: This genus name is currently treated as feminine.
Description: Thallus dark green, coenocytic, composed of branched, entangled, stoloniferous basal system giving rise to unbranched, erect siphons. Erect siphons turgid, tubular, without septa, to 40 cm. long and 3 mm in diameter, tapering to rounded apex; with large central vacuole and parietal cytoplasm containing numerous nuclei and small, discoid plastids lacking pyrenoids. Rhizoids of variable thickness, irregularly branched, with occasional septa, producing erect siphons sympodially. Cell walls containing xylan and mannan. Reproduction by swarmers of unknown nature, produced in apparently unmodified siphons and released through multiple pores. Swarmers ca. 7 _m X 4 _m, with two equal flagella, containing several chloroplasts and an eyespot. Lambia antarctica is found in West Antarctica in the South Orkney Islands, South Shetland Islands and on the Antarctic Peninsula near Anvers Island (the type locality being the Melchior Islands). It is found in East Antarctica in Wilkes Land and near Mawson Base in Mac-Robertson Land (R. Ricker, pers. comm.). It has been found as shallow as 17 m and has been dredged from 105 m. Near Anvers Island it is often found deeper than 25 m, at the interface of rock and silt, or on deep rubble slopes, sometimes in association with large tunicates and the red alga Picconiella plumosa. Siphons are usually covered with cocconeid diatoms and the green epiphyte Entocladia viridis.Plants grow well in culture. If a siphon is damaged, the cytoplasmic contents round off to form membrane-bounded protoplasts that secrete a new wall and germinate to regenerate siphons. The genus is named for Ivan McKenzie Lamb (1911-1990), lichenologist and phycologist who collected the type specimens.
Information contributed by: R. Moe. The most recent alteration to this page was made on 25 Aug 2008 by M.D. Guiry.
Numbers of names and species: There is only one species or infraspecific name in the database at present, which has been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..
Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
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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.
Created: 28 December 2000 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43057
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 26 October 2021.