Holotype species: Sarconema furcellatum Zanardini
Currently accepted name for the type species: Sarconema filiforme (Sonder) Kylin
Original publication and holotype designation: Zanardini, G. (1858 '1857'). Plantarum in mari Rubro hucusque collectarum enumerato (juvante A. Figari). Memoirie del Reale Istituto Veneto di Scienze, Lettere ed Arti 7: 209-309, pls III-XIV.
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.
Monotypic when first introduced. - (23 Jan 2017) - M.D. Guiry
Description: Plants reach 20 cm in length, are erect and generally clustered from a discoid base, and are terete and regularly to irregularly dichotomously branched. Apices are multiaxial, the medulla being a narrow core of mixed axial filaments and rhizoids surrounded by a broad pseudoparenchymatous cortex. Carpogonial branches are 3-celled, the carpogonium emitting a single, branching connecting filament on fertilization. Nutritive cells produced in the vicinity of the auxiliary cell are apparently absorbed by the fusion cell, which incorporates the auxiliary celll, early gonimoblast cells, and adjacent gametophytic cells. Cystocarps are deeply buried in the thallus, often in clusters, and consist of the large, irregularly contoured laterally positioned fusion cell surrounded by a few layers of branched gonimoblast filaments bearing terminal chains of carposporangia. Pericarps develop an ostiole only at maturity of the carposporophyte and lack an inner filamentous hull. Spermatangial mother cells give rise to what appear to be 2-celled chains of spermatia (Ampili et al. 1987). Tetrasporangia are scattered in the cortex and are laterally attached to bearing cells.
Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 23 Jan 2017 by M.D. Guiry.
Comments: The genus has been monographed by Papenfuss and Edelstein (1974), who reduce several species to synonymy. Distribution: The type species was originally described from the Red Sea and is widely distributed through the Indian Ocean from east Africa to Western Australia and north to subtropical eastern Australia. The second species, S. scinaioides Boergesen, is restricted to eastern Africa (Kenya, Tanzania) and Pakistan.
Numbers of names and species: There are 7 species names in the database at present, as well as 2 infraspecific names. Of the species names, 3 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.
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: 23 January 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=35134
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.