153,585 species and infraspecific names are in the database, 20,980 images, 59,387 bibliographic items, 411,011 distributional records.

Hydrolithon (Foslie) Foslie, 1909

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

Lectotype species: Hydrolithon reinboldii (Weber Bosse & Foslie) Foslie

Original publication:Foslie, M. (1909). Algologiske notiser VI. Kongelige Norske Videnskabers Selskabs Skrifter 1909(2): 1-63.
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Type designated in Mason, L.R. (1953). The crustaceous coralline algae of the Pacific coast of the United States, Canada and Alaska. University of California Publications in Botany 26: 313-389, Plates 27-46.

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: Thallus attached to the substratum or as rhodoliths, encrusting, layered, lumpy or warty, non-geniculate. Thallus dimerous in construction; medulla not a palisade. Cortex with trichocytes of various shapes and frequency. Cortical filaments terminated externally by 1, rarely 2 epithallial cells. Sporangial conceptacles with bisporangia or zonate tetrasporangia.

Information contributed by: R.A. Townsend & J.M. Huisman (2018).. The most recent alteration to this page was made on 25 Sep 2018 by M.D. Guiry.

Numbers of names and species: There are 40 species names in the database at present, as well as 7 infraspecific names. Of the species names, 24 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.

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.

Rösler, A., Perfectti, F., Peña, V. & Braga, J.C. (2016). Phylogenetic relationships of Corallinaceae (Corallinales, Rhodophyta): taxonomic implications for reef-building corallines. Journal of Phycology 52(3): 412-431.

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

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

Verified by: 20 January 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=32966

Citing AlgaeBase
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 15 November 2018.

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