155,278 species and infraspecific names are in the database, 21,865 images, 60,056 bibliographic items, 436,069 distributional records.

Nothogenia Montagne, 1843

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Nemaliophycidae
Order Nemaliales
Suborder Galaxaurineae
Family Scinaiaceae

Holotype species: Nothogenia variolosa (Montagne) Montagne

Currently accepted name for the type species: Nothogenia fastigiata (Bory) P.G.Parkinson

Original publication and holotype designation: Montagne, C. (1843). Quatrième centurie de plantes cellulaires exotiques nouvelles. Décades VII. Annales des Sciences Naturelles, Botanique, Seconde Série 20: 294-306, pl. 12.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Huisman, J.M., Harper, J.T. & Saunders, G.W. (2004). Phylogenetic study of the Nemaliales (Rhodophyta) based on large-subunit ribosomal DNA sequences supports segregation of the Scinaiaceae fam. nov. and resurrection of Dichotomaria Lamarck. Phycological Research 52(3): 224-234.

Description: Gametophytes and tetrasporophytes heteromorphic. Gametophytes erect, noncalcified; axes either hollow bladders, or blade-like and simple or dichotomously branched to marginally proliferous. Medulla filamentous; subcortex filamentous with rhizoids; outer cortex small-celled and compact. Dioecious; spermatangia in conceptacles. Carpogonial branches 3 to 5-celled; sterile filaments cut off of sub-carpogonial cells prior to fertilization; gonimoblast filaments produced directly from the carpogonium (Delapine & Lambert 1981) and forming the wall of the cystocarp, or from the hypogynous cell (Martin 1939) and forming the lining of the cystocarp in addition to an involucre of filaments derived from the sub-hypogynous cells. A fusion cell present at the base of the cystocarp. Carposporangia formed terminally on tufted branches projecting from the cystocarp wall; regeneration of new sporangia within old sporangial walls. Sporophytes crustose; horizontal filaments form erect filaments terminating in cruciately or decussately divided tetrasporangia.

Information contributed by: R.B. Searles. The most recent alteration to this page was made on 5 Oct 2010 by M.D. Guiry.

Comments: Intertidal, restricted to South Africa, Australia, New Zealand, South America and subantarctic islands.

Numbers of names and species: There are 14 species names in the database at present, of which 10 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=34161

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 27 May 2019.

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