152,947 species and infraspecific names are in the database, 20,947 images, 59,170 bibliographic items, 408,277 distributional records.

Catenella Greville, 1830, nom. cons.

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

Holotype species: Catenella opuntia (Goodenough & Woodward) Greville

Currently accepted name for the type species: Catenella caespitosa (Withering) L.M.Irvine

Original publication and holotype designation: Greville, R.K. (1830). Algae britannicae, or descriptions of the marine and other inarticulated plants of the British islands, belonging to the order Algae; with plates illustrative of the genera. pp. [i*-iii*], [i]-lxxxviii, [1]-218, pl. 1-19. Edinburgh & London: McLachlan & Stewart; Baldwin & Cradock.
 Download PDF

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.

Description: Plants reach 2-5 cm in height, are terete to slightly flattened, segmented, and branched from the nodes. Axes are often rampant and imbricating, and are attached by lateral haptera. Erect axes are generally short (ca. 2-3 cm in length). Central axial cells each bear 2 periaxial cells, but the central filaments are indistinct among the reticulate cells of the broad medulla. A broad, filamentous inner cortex grades to a shallow, anticlinal outer cortex. Carpogonial branches are usually 2- or 3-celled, the basal cell bearing one or several sterile cells. Two or three connecting filaments arise from fertilized carpogonia, and gonimoblast development is primarily inward. Carposporophytes produce chains of carposporangia, the cystocarps being ostiolate but lacking a filamentous sheath. Spermatangial clusters and tetrasporangia are scattered (Min-Thein and Womersley, 1976).

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 20 Jan 2017 by M.D. Guiry.

Comments: Distribution: This is the most widespread member of the family, the type species coming from southern Wales and other representatives being common throughout the world's tropics and subtropics, often as a conspicuous element of the floras on mangrove pneumatophores. Post (1936), Tseng (1942), and Min-Thein and Womersley (1976 have contributed major studies of the genus.

Numbers of names and species: There are 10 species names in the database at present, as well as 2 infraspecific names. Of the species names, 5 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

Verified by: 20 January 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=104

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 25 September 2018.

SITE © 1996 - 2018 M.D. Guiry. All rights reserved.

Website Design : 249 Design Studio