156,957 species and infraspecific names are in the database, 22,046 images, 60,672 bibliographic items, 451,275 distributional records.

Amansia J.V.Lamouroux, 1809

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Ceramiales
Family Rhodomelaceae
Tribe Amansieae

Holotype species: Amansia multifida J.V.Lamouroux

Original publication and holotype designation: Lamouroux, J.V.F. (1809). Observations sur la physiologie des algues marines, et description de cinq nouveaux genres de cette famille. Nouveau Bulletin des Sciences, par la Société Philomathique de Paris 1: 330-333, fig. 2, pl. 6.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Huisman, J.M. (2018). Algae of Australia. Marine benthic algae of north-western Australia. 2. Red algae. pp. [i]-xii, 1-672, 189 figs. Canberra & Melbourne: ABRS & CSIRO Publishing.

Nomenclatural notes
Dedicated to "Saint-Amans Bulletin de la Société Philomatique" (Lamouroux 1813: 270). - (23 Jan 2011) - M.D. Guiry

Description: Thallus erect, dorsiventral, with loriform blades that have distinct or indistinct midribs and marginal serrations. Branching from the midrib or pinnately from the margins, occasionally adventitiously from secondary cortication. Apices involute. Structure uniaxial, the central axis ringed by 5 pericentral cells, the first-formed ventral and the last 2-formed dorsal, the dorsal pericentral cells remaining undivided or subsequently each cutting off a lateral pseudopericentral cell. A single trichoblast often formed on the dorsal side of segments. First- to fourth-formed pericentral cells dividing longitudinally and developing into lateral uniseriate branches that remain contiguous, these determinate and forming lateral alae 2 cells thick on either side of the midrib. Serrations formed by endogenous branchlets or renewed growth of marginal cells. In some species the midrib becoming thickened by divisions of the pericentral cells. Reproductive structures arising on endogenous branchlets or adventitious branchlets formed from the margins or surface of the blade. Tetrasporangia formed in intercalary series on determinate endogenously formed lateral branchlets.

Information contributed by: J.M. Huisman (2018).. The most recent alteration to this page was made on 8 Oct 2018 by M.D. Guiry.

Numbers of names and species: There are 44 species names in the database at present, as well as 1 infraspecific names. Of the species names, 17 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
Norris, R.E. (1988). Structure and reproduction of Amansia and Melanamansia gen nov. (Rhodophyta, Rhodomelaceae) on the southeastern African coast. Journal of Phycology 24: 209-223, 35 figs.

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: 28 December 2000 by M.D. Guiry

Verified by: 08 October 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=35584

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 09 December 2019.

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