155,821 species and infraspecific names are in the database, 21,968 images, 60,224 bibliographic items, 439,360 distributional records.

Sterrocladia F.Schmitz, 1893

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

Holotype species: Sterrocladia amnica (Montagne) F.Schmitz

Original publication and holotype designation: Schmitz, F. (1893). Die Gattung Actinococcus Kütz. Flora 77: 367-418, 5 figs, pl. VII.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Skuja, H. (1944). Untersuchungen über die Rhodophyceen des Süsswassers (VII-XII). Acta Horti Bot. Univ. Lat. 14: 3-64.

Taxonomic notes
According to Sherwood et al. (2012), although recent material of S. amnica was unavailable, molecular phylogenetic analyses of the rbcL and SSU rRNA gene for their new samples (S. belizeana) indicated that it was a member of the Gigartinales, and that it was positioned basal to the Gigartinaceae and Phyllophoraceae clades, likely representing a novel family. - (17 Dec 2012) - Wendy Guiry

Description: Plants occur in brackish water and consist of terete, irregularly branched axes to 3 cm in length attached by basal rhizoids. It is not known how many periaxials arise from each central axial cell, but cross sections show a compact pseudo parenchymatous medulla and a single-layered cortex surrounding the axial filament (Bourrelly, 1970). The only putative reproductive structures known are "nemathecia" which contain tufts of short filaments bearing possible monosporangia.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 7 Oct 2010 by M.D. Guiry.

Comments: Carpogonial branches, cystocarps and tetrasporangia are unknown. Placement of the genus is thus highly tentative, Skuja (1944: 34) suggesting that its features are in line with the Gigartinales, possibly as a member of the Caulacanthaceae (as the Rhabdoniaceae). Known only from Guyana.

Numbers of names and species: There are 2 species names in the database at present, of which 2 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.

Sherwood, A.R., Necchi, O., Jr, Carlile, A.L., Laughinghouse, H.D.IV, Fredericq, S. & Sheath , R.G. (2012). Characterization of a novel freshwater gigartinalean red alga from Belize, with a description of Sterrocladia belizeana sp. nov. (Rhodophyta). Phycologia 51(6): 627-635.

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

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=42783

Citing AlgaeBase
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 July 2019.

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