152,885 species and infraspecific names are in the database, 20,939 images, 59,127 bibliographic items, 408,269 distributional records.

Tikvahiella Kraft & Gabrielson, 1983

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

Holotype species: Tikvahiella candida Kraft & P.W.Gabrielson

Original publication and holotype designation: Kraft, G.T. & Gabrielson, P.W. (1983). Tikvahiella candida gen. et sp. nov. (Solieriaceae, Rhodophyta), a new adelphoparasite from southern Australia. Phycologia 22: 47-57.

Taxonomic status: currently recognized as a distinct genus.

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 are minute (3-5 mm tall) parasites of Solieria robusta and consist of endophytic filaments pit connected to host cells and erumpant pustules that are irregularly lobed. Axes are multiaxial, the medulla being broad and laxly filamentous and the cortex pseudoparenchymatous. Carpogonial branches are 3-celled, the fertilized carpogonium issuing two unbranched connecting filaments. The auxiliary cell and adjoining cells form an “auxiliary cell complex" prior to diploidization. Either a single or 2 gonimoblast initials arise thallus-inwardly, the carposporophyte ultimately encompassing a fusion cell that incorporates proximal cells of the auxiliary-cell cortical filament, surrounded by a few layers of sterile gonimoblasts bearing single terminal carposporangia. Scattered nutritive filaments in the vicinity of the carposporophyte result in a rudimentary filamentous involucre. Cystocarps are deeply sunken in the axes and are ostiolate. Gametophytes are monoecious, the superficial spermatangial mother cells either confined to separate lobes or aggregated at the bases of female lobes. Tetrasporangia are scattered and laterally attached to bearing cells.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 8 Oct 2010 by M.D. Guiry.

Comments: Distribution: Endemic to southern Australia, where it is recorded subtidally to 5 m depths at two widespread localities.

Numbers of names and species: There is only one species or infraspecific name in the database at present, which has 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=42806

Citing AlgaeBase
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 September 2018.

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