Palmella Lyngbye, 1819

Lectotype species: Palmella hyalina Lyngbye

Original publication: Lyngbye, H.C. (1819). Tentamen hydrophytologiae danicae continens omnia hydrophyta cryptogama Daniae, Holsatiae, Faeroae, Islandiae, Groenlandiae hucusque cognita, systematice disposita, descripta et iconibus illustrata, adjectis simul speciebus norvegicis. pp. [i]-xxxii, [1]-248, 70 pls. Hafniae [Copenhagen]: typis Schultzianis, in commissis Librariae Gyldendaliae.

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Type designated in: Chevallier, F.F. (1836). Flore générale des environs de Paris, selon la méthode naturelle. Description de toutes les plantes agames, cryptogames et phanérogames qui y croissent spontanément; leurs propriétés, leurs usage dans la médecine, les arts, et l'économie domestique; avec une classification naturelle des agames et des cryptogames, basée sur l'organisation de ces végétaux et accompagnée de dix-huit tableaux iconographiques formant uix genera propre a en rendre l'étude plus facile. Seconde édition, corrigée et augmentée. pp. i-xxiv, 1-680, 14 pls. Paris: Ferra, Libraire-Éditeur, rue des Grands Augustins, no. 23.

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Description: Thalli colonial, forming microscopic to macroscopic globular to amorphous, gelatinous, green or brick-red masses attached to substrata. Cell walls with concentric rings of wall material around single cells and recently divided pairs of cells. Cells spherical to broadly ellipsoid, 11-18 x 8-16 &m. Cells uninucleate; chloroplast single and parietal, cup shaped with single pyrenoid. Colony growth by mitosis with asexual reproduction by division of cell contents into 4, 8, or 16 biflagellate zoospores. Vegetative cells may directly convert in swarmers. Zoospores with or without eyespots. Akinetes also reported. Sexual reproduction isogamous with 32 or 64 biflagellate gametes formed from single protoplast. Palmella in freshwater, attached to substratum; reported from Europe and North America. Genus of uncertain nomenclatural and taxonomic status. Upwards of 100 species ascribed to genus of which most have been assigned elsewhere.

Information contributed by: D. Garbary. The most recent alteration to this page was made on 2011-02-14 by M.D. Guiry.

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

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 14 February 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 17 June 2024

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