161,464 species and infraspecific names are in the database, 22,723 images, 62,912 bibliographic items, 473,550 distributional records.

Colacopsis De Toni, 1903

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

Holotype species: Colacopsis pulvinata (F.Schmitz) De Toni

Original publication and holotype designation: De Toni, G.B. (1903). Sylloge algarum omnium hucusque cognitarum. Vol. IV. Florideae. Sectio III. pp. [i], frontispiece, [iii-v], 775, 775 bis, 776, 777 bis, 777-1521 + 1523-1525. Patavii [Padua]: Sumptibus auctoris.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Kylin, H. (1956). Die Gattungen der Rhodophyceen. pp. i-xv, 1-673, 458 figs. Lund: C.W.K. Gleerups.

Description: Parasitic thalli, fertile erect filaments arising from a pulvinate outgrowth on host, outgrowth including host tissue and internal parasite filaments; upright polysiphonous filaments mostly missing. Erect filaments monosiphonous, simple or with 1-2 branches, each terminating in a reproductive structure. Tetrasporangial stichidia with more than 3 sporangia in each segment; with 5-8 pericentral cells, each of which may be fertile or 1- several may remain sterile in a segment; stichidia with curved distal ends. Cystocarps spheroid to ovoid, on monosiphonous stalks or, in C. velutina and C. lophurellae, becoming polysiphonous in post-fertilization stages. Male capitula spheroid to ovoid, terminating unseriate filaments arising from pulvinate outgrowth.

The most recent alteration to this page was made on 6 Oct 2010 by M.D. Guiry.

Comments: Parasitizing Vidalia (C. pulvinata), Rhodomelopsis (C. velutina), Lophurella (C. lophurellae) and tetrasporangial stichidia of Lenormandiopsis (C. smithenae); in South Africa, Argentina and subantarctic islands including those of New Zealand.

Numbers of names and species: There are 4 species names in the database at present, of which 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.

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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.

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=35632

Citing AlgaeBase
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 15 May 2021.

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