153,560 species and infraspecific names are in the database, 20,957 images, 59,363 bibliographic items, 410,286 distributional records.

Metamastophora Setchell, 1943

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Corallinophycidae
Order Corallinales
Family Mastoporaceae
Subfamily Mastophoroideae

Holotype species: Metamastophora flabellata (Sonder) Setchell

Original publication and holotype designation: Setchell, W.A. (1943). Mastophora and the Mastophoreae: genus and subfamily of Corallinaceae. Proceedings of the National Academy of Science of the United States of America 29: 127-135.

Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Turner, J.A. & Woelkerling, W.J. (1982). Studies on the Mastophora-Lithoporella complex (Corallinaceae, Rhodophyta). II. Reproduction and generic concepts. Phycologia 21: 218-235, 32 figs, 3 tables.

Description: Thalli comprising holdfasts, short stipes, and thin branched sheets. Organized into first- and second-order filaments (dimerous). First-order filaments (primigenous filaments) forming a unistratose layer of elongate cells (palisade cells). Second-order filaments (postigenous filaments) of one or more cells arising from both sides (dorsal and ventral) of first-order filaments. Outermost walls of epithallial cells rounded or flattened, not flared. Cells in contiguous filaments often joined by fusions; secondary pit-connections occasionally present in older parts. Trichocytes uncommon, but when present arising singly or in clusters from cells in first-order filaments. Reproductive cells forming within uniporate conceptacles projecting from erect parts of thalli. Tetrasporangia located in peripheral ring around a central columella. Apical sporangial plugs absent. Bisporangia unknown. Gametangia poorly known.

Information contributed by: H.W. Johansen. The most recent alteration to this page was made on 5 Oct 2010 by M.D. Guiry.

Comments: Present in southern Australia and southern Africa, in the former area recorded to a depth of 48 m. The arborescent habit is correlated with a paucity of calcification in lower parts of the fronds and hence they exhibit a considerable degree of flexibility. Metamastophora is placed in the Mastophoroideae because of a preponderance of cell fusions over secondary pit-connections; it appears most closely related to Lithoporella and Mastophora. These genera contain first-order filaments with stratified elongate cells. Furthermore, both Metamastophora and Mastophora have similar tetrasporangial conceptacles. Metamastophora is unique in the Mastophoroideae in having holdfasts and stipes, and in producing second-order filaments from both dorsal and ventral surfaces of the first-order filaments.

Numbers of names and species: There are 6 species names in the database at present, of which 1 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):

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References
Kato, A., Baba, M. & Suda, S. (2011). Revision of the Mastophoroideae (Corallinales, Rhodophyta) and polyphyly in nongeniculate species widely distributed on Pacific coral reefs. Journal of Phycology 47(3): 662-672.

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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: 01 January 2001 by M.D. Guiry

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Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=39460

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 12 November 2018.

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