152,885 species and infraspecific names are in the database, 20,939 images, 59,127 bibliographic items, 408,269 distributional records.

Perispermon Heydrich, 1900

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

Holotype species: Perispermon hermaphroditum Heydrich

Currently accepted name for the type species: Lithophyllum hermaphroditum (Heydrich) Woelkerling

Original publication and holotype designation: Heydrich, F. (1900). Weitere Ausbau des Corallineensystems. Berichte der deutsche botanischen Gesellschaft 18: 310-317.
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Precise date of publication28 August 1900 (see Woelkerling & Lamy 1998: 680 for details).

Taxonomic status: currently regarded as a synonym of Lithophyllum.

Nomenclatural notes
The ICBN rules cited below are those adopted by the Seventeenth International Botanical Congress, Vienna, Austria, July 2005 (McNeill et al. 2006).

The generic name Perispermon (Heydrich 1900: 316) is accompanied by diagnosis (as part of a generic key) and thus is validly published (ICBN Art 41.2) even though the author did not describe any new species or effect any new species name combinations within the genus. Heydrich (1900: 316, footnote 7) included a single taxon described as Lithothamnion sp. 1 in an earlier paper (Heydrich 1897:7), also indicating that a manuscript on that taxon had been completed. The manuscript was published the following year (Heydrich 1901) and contains a detailed account of the single included species, P. hermaphroditum.

The generic name Perispermon is typified (ICBN Art. 10.1) by the type of P. hermaphroditum, the only species originally included in the genus.

In accordance with ICBN Art. 13.3, the name Perispermon is treated as pertaining to a non-fossil taxon because its type is based on a non-fossil specimen. No species based on fossil types have been assigned to the genus. - (20 Jul 2009) - M.D. Guiry

Description: No description is provided at this time as the genus is currently referred to synonymy.

Information kindly contributed by Wm. J. Woelkerling but may now be outdated.

Comments: Woelkerling (1991) concluded from a detailed study of the lectotype specimen (TRH A4-183; see Woelkerling et. al. 2005: 45-6) that Perispermon hermaphroditum, the type species of Perispermon, belongs to Lithophyllum (Family Corallinaceae). Consequently, Perispermon is treated as a heterotypic synonym of Lithophyllum. The status of L. hermaphroditum as a distinct species within Lithophyllum remains unresolved (Woelkerling 1991), but this does not alter the present status of the genus as a heterotypic synonym.

Numbers of names and species: There is only one species or infraspecific name in the database at present.

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
Heydrich, F. (1897). Neue Kalkalgen von Deutsch-Neu-Guinea (Kaiser Wilhelms-Land). Bibliotheca Botanica 7(41): 1-11, 1 pl.

Heydrich, F. (1900). Weitere Ausbau des Corallineensystems. Berichte der deutsche botanischen Gesellschaft 18: 310-317.

Heydrich, F. (1901). Die Entwicklungsgeschichte des Corallineen-genus Perispermum Heydrich. Berichte der Deutsche Botanischen Gesellschaft 19: 409-420.

McNeill, J., Barrie, F.R., Burdet, H.M., Demouline, V., Hawksworth, D.L., Marhold, K., Nicolson, D.H., Prado, J., Silva, P.C., Skog, J.E., Wiersema, J.H. & Turland, N.J. (2006). International Code of Botanical Nomenclature (Vienna Code) adopted by the Seventeenth International Botancial Congress Vienna, Austria, July 2005. pp. [i-iv], v-xviii + 1-568. Liechtenstein: A.R.G. Gantner Verlag.

Woelkerling, W.J. (1991). The status and disposition of Perispermon (Corallinaceae, Rhodophyta). Phycologia 30: 135-144.

Woelkerling, W.J., Gustavsen, G., Myklebost, H.E., Prestø, T., Såstad, S.M. (2005). The coralline red algal herbarium of Mikael Foslie: revised catalogue with analyses. Gunneria 77: 1-625.

Woelkerling, W.J. & Lamy, D. (1998). Non-geniculate coralline red algae and the Paris Museum: Systematics and scientific history. pp. i-vii, 1-767. Paris: Publications Scientifiques du Muséum/ADAC.

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: 16 April 2003 by M.D. Guiry

Verified by: 16 February 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=45984

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 20 September 2018.

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