Choreocolax Reinsch, 1875

Lectotype species: Choreocolax polysiphoniae Reinsch

Original publication: Reinsch, P.F. (1875 '1874/75'). Contributiones ad algologiam et fungologiam. Vol. 1 pp. [i]-xii, [1]-103, [104, err.], 131 plates [I-III, IIIa, IV-VI, VIa, VII-XII, XIIa, XIII-XX, XXa, XXI-XXXV, XXXVa, XXXVI (Melanophyceae); I-XLII, XLIIa, XLIII-XLVII, XLVIIa, XLVIII-LXI (Rhodophyceae); I-XVIII (Chlorophyllophyceae); I-IX (Fungi)]. Norimbergae [Nürnberg]: Typis Theodor Haesslein.

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Type designated in: Schmitz, F. (1889). Systematische Übersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.

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Description: Plants form small lobed cushions on rhodomelaceous hosts. Gametophytes are dioecious, and spermatangia develop in clusters from superficial cortical cells. Carpogonial branches are 4-celled; cystocarps are aggregated, embedded, and surrounded by a porate hull of sterile gametophytic filaments. Carposporangia form in terminal pairs. Goff and Coleman (1985) have followed the progress of secondary pit connection formation and hypothesize that parasite nuclei transferred to host cells by conjunctor cells may control and redirect the host physiology for benefit of the parasite.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2019-05-10 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 masculine.

Most recent taxonomic treatment adopted: Salomoaki, E.D. & Lane, C.E. (2019). Molecular phylogenetics supports a clad of red algal parasites retaining native plastids: taxonomy and terminology revised. Journal of Phycology 55(2): 279-288, 3 figs, 2 tables.

Comments: Distribution: The type species occurs on Polysiphonia and related genera along the northern rim of the Atlantic from Connecticut in the west to Spain in the east, and in the eastern Pacific from Alaska to Baja California. A reputed second species, C. odonthaliae Levring, was shown to be equivalent to Harveyella mirabilis (below) by Edelstein and McLachlan (1977).

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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. 10 May 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 22 April 2024

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