162,433 species and infraspecific names are in the database, 22,760 images, 64,011 bibliographic items, 474,997 distributional records.

Herposiphonia Nägeli, 1846

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

Lectotype species: Herposiphonia tenella (C.Agardh) Ambronn

Currently accepted name for the type species: Herposiphonia secunda f. tenella (C.Agardh) M.J.Wynne

Original publication:Nägeli, C. (1846). Über Polysiphonia und Herposiphonia. Zeitschrift für wissenschaftliche Botanik 4: 207-256, pls VI, VII, VIII.
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Type designated in Schmitz, F. (1889). Systematische Übersicht der bisher bekannten Gattungen der Florideen. Flora oder Allgemeine botanische Zeitung 72: 435-456, pl. XXI.
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Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Díaz-Tapia, P., Maggs, C.A., West, J.A. & Verbruggen, H. (2017). Analysis of chloroplast genomes and a supermatrix inform reclassification of the Rhodomelaceae (Rhodophyta). Journal of Phycology 53(5): 920-937, 2 figs.

Nomenclatural notes
Athanasiadis (2016: 1226) cited this name as "(Kützing) J. Agardh" and gives POLYSIPHONIA section HERPOSIPHONIA Kützing 1843: 417 as the basionym. Schmitz (1889: 449) selected the lectotype. - (26 Jan 2017) - M.D. Guiry

Description: Thallus small, commonly epiphytic, with prostrate and erect axes. Prostrate axes indeterminate, giving rise to a regular sequence of determinate simple or sparingly branched erect axes and indeterminate axes. Many species with 3 determinate branches between indeterminate branches, the latter arising on alternate sides, dorsiventral, with circinate apices, curving away from the substratum. Determinate branches generally short and of uniform length, with straight apices, occasionally with deciduous trichoblasts. Structure polysiphonous, terete, ecorticate, with 4–many pericentral cells (number usually variable between prostrate and erect portions); attached by rhizoids cut off from ventral cells. Reproductive structures only on determinate axes. Spermatangial branches replacing or borne on trichoblasts, cylindrical. Cystocarps on epibasal segments of trichoblasts which are terminal or subterminal on determinate axes. Tetrasporangia 1 per segment, usually in straight series, occasionally spirally arranged.

Information contributed by: Huisman (2018). The most recent alteration to this page was made on 9 Oct 2018 by M.D. Guiry.

Comments: Saxicolous or epiphytic, intertidal, subtidal (known to occur to 75 m) in temperate to tropical parts of all ocean systems.

Numbers of names and species: There are 67 species names in the database at present, as well as 16 infraspecific names. Of the species names, 60 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: 28 December 2000 by M.D. Guiry

Verified by: 18 July 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=33325

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 30 July 2021.

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