Pseudopedinella N.Carter, 1937

Holotype species: Pseudopedinella pyriformis N.Carter

Original publication and holotype designation: Carter, N. (1937). New or interesting algae from brackish water. Archiv für Protistenkunde 90: 1-68.

Description: Cells naked, slightly conically barrel-shaped, the broadest part being apical. Six elongated, golden brown chloroplasts, each with an emergent pyrenoid facing the centrally located nucleus located parietally. Microtubular triplets end just beneath the cell surface, tentacles or pseudopodial arms only occasionally present. The single anterior flagellum 3-5 times the cell length emerges from a central depression. It has a wing supported by a paraxial rod, and bears a row of tubular (tripartite) hairs. Slender contractile pseudopodium of variable length (1/2-6 times cell length) protrudes from the posterior depression of the cell, and trails behind during swimming, and does not attach to the substratum. The free-swimming cells with 3 or 6 chloroplasts, and often long trailing pseudopodia, are quite characteristic. The single submerged pyrenoid on the inside of each chloroplast may be seen in phase contrast microscopy. Nutrition autotrophic. Reproduction not yet described, but cysts are known for one species (P. tricostata). Common in freshwater and marine plankton of the Atlantic, Pacific and Arctic Oceans and Mediterranean Sea.

Information contributed by: J.Throndsen. The most recent alteration to this page was made on 2021-10-08 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: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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. 08 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 18 May 2024

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