Pseudopringsheimia Wille, 1909

Type species: a type species (generitype) appears not to have been designated.

Original publication: Wille, N. (1909). Conjugatae und Chlorophyceae. In: Die natürlichen Pflanzenfamilien ... Nachträge zum I. Teil, Abteilung 2 über die Jahre 1890 bis 1910. (Engler, A. & Prantl, K. Eds), pp. 1-96. Leipzig: Verlag von Wilhelm Engelmann.

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Description: Heteromorphic life history with alternation of crustose gametophyte and filamentous sporophyte. Gametophytic stage forms confluent, multilayered spots on host. Each vegetative cell with single parietal chloroplast in upper part of cell. Sporophytes, only known from culture as irregularly branched filaments, able to penetrate calcareous material. Sporophytes unusual because only apical cells contain cytoplasm. These cells are slightly dilated compared with remaining cylindrical cells. During sexual reproduction all upper cells of gametophytic crust form sporangia simultaneously, producing biflagellate isogametes; at maturity these escape through pore at sporangium apex. Apical cells of sporophyte transform into sporangia and produce quadriflagellate zoospores released through papilla or small exit tube. Haploid chromosome number = 6 in P. confluens. Pseudopringsheimia epiphytic on large brown algae from North Atlantic and North Pacific Oceans. Considered by some authors as synonym of Pseudendoclonium.

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

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

Most recent taxonomic treatment adopted: Brodie, J., Maggs, C.A. & John, D.M. (2007). Green seaweeds of Britain and Ireland. pp. [i-v], vi-xii, 1-242, 101 figs. London: British Phycological Society.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=32813

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 02 February 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024