163,770 species and infraspecific names are in the database, 22,783 images, 63,043 bibliographic items, 481,350 distributional records.

Rytiphlaea C.Agardh, 1817

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

Lectotype species: Rytiphlaea purpurea C.Agardh

Currently accepted name for the type species: Rytiphlaea tinctoria (Clemente) C.Agardh

Original publication:Agardh, C.A. (1817). Synopsis algarum Scandinaviae, adjecta dispositione universali algarum. pp. [i]-xl, [1]-135. Lundae [Lund]: Ex officina Berlingiana.
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Type designated in Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. II. pp. [2], 763-1504. Thessaloniki: Published and distributed by the author.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Phillips, L.E. & De Clerck, O. (2005). The terete and sub-terete members of the red algal tribe Amansieae (Ceramiales, Rhodomelaceae). Cryptogamie Algologie 26: 5-33, 26 figs.

Nomenclatural notes
The ING entry (January 2016) is incorrect "LT.: R. tinctoria (Clemente) C. Agardh (Fucus tinctorius Clemente) (vide F. Schmitz, Flora 72: 447. 20 Dec 1889). R. tinctoria as slected by Schmitz was not an included name in the original description and thus cannot serve as lectotype (Athanasiadis 2016: 1386). The original spelling used by C.Agardh (1717: xxv) is Rytiphlaea and a change to Rytiphloea would require conservation. Agardh included four species: Complanata, Pinastroides, Purpurea and Lineata. The original orthography chosen by J.Agardh was "Rytiphlaea" and a change from Rytiphlaea to Rytiphloea and a change in gender (see Athanasiadis 2016: 1386, note 1), if warranted, should be made by formally proposing conservation of the altered name. - (19 Jan 2017) - M.D. Guiry

Description: Dorsiventral polysiphonous thalli, up to ~20 cm high; axis and branches flattened, corticated, with circinate tips, branches usually abaxially secund. 5 pericentral cells, pseudoparenchymatous tissue expanding on two opposite sides to form flattened thalli (Gayral 1966). Polysiphonous branches endogenously produced; trichoblasts uncommon, vesiculate if emergent, in a median dorsal row. Tetrasporangial stichidia on ultimate branch margins, 2 in each segment forming two longitudinal dorsal rows. Male capitula and procarps replacing trichoblasts, dorsal on small branchlets formed on margin of ultimate branches. Cystocarps spheroidal, sessile on branchlet, 1- several on same branchlet.

Information contributed by: R.E. Norris. The most recent alteration to this page was made on 9 Jul 2019 by M.D. Guiry.

Comments: Upper sublittoral, eastern north Atlantic from Great Britain to Mauritania, Mediterranean and Aegaen Seas. The second species, R. australis, was included as a synonym of Lophurella patula by Pujals (1963) although Papenfuss (1964) listed it as a species of Rytiphloea with uncertain status; it occurs in the Falkland Islands.

Numbers of names and species: There are 39 species names in the database at present, as well as 4 infraspecific names. Of the species names, 5 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.

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

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: 29 December 2000 by M.D. Guiry

Verified by: 09 July 2019 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42700

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 16 October 2021.

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