153,615 species and infraspecific names are in the database, 20,981 images, 59,407 bibliographic items, 412,628 distributional records.

Cruoriella P.Crouan & H.Crouan, 1859

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Peyssonneliales
Family Peyssonneliaceae

Holotype species: Cruoriella armorica P.Crouan & H.Crouan

Currently accepted name for the type species: Peyssonnelia armorica (P.Crouan & H.Crouan) Weber Bosse

Taxonomic status: currently recognized as a distinct genus.

Description: Plants are generally less than 2 cm in breadth and are virtually identical in habit, structure and reproduction to many species of the genus Peyssonnelia, the sole distinguishing feature being the extremely soft and mucilaginous texture of the fronds and the ease with which the constituent filaments separate under pressure. Denizot (1968) has investigated type material of Cruoriella and Cruoriopsis, which he finds to be synonymous, and has reviewed the considerable taxonomic confusion that attends these entities. Abbott and Hollenberg (1976) provisionally recognize Cruoriopsis, but at least 5 former members of Cruoriopsis are still unable to be placed in a satisfactory genus.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 13 Sep 2009 by Stephen Cusack.

Comments: Distribution: The type species grows on shells at varying depths in the British Isles, Atlantic France, and the Mediterranean Sea. Other species occur in Japan (3 species), Pacific North America from Washington to Mexico, the Red Sea, Sumatra and New Caledonia.

Numbers of names and species: There are 27 species names in the database at present, as well as 2 infraspecific names. Of the species names, 4 have 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):

Click here to also show infraspecific names in the list below.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

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.

Created: 28 December 2000 by M.D. Guiry

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Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=41635

Citing AlgaeBase
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 November 2018.

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