153,798 species and infraspecific names are in the database, 21,012 images, 59,568 bibliographic items, 413,155 distributional records.

Psilosiphon Entwisle, 1989

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Nemaliophycidae
Order Batrachospermales
Family Batrachospermaceae

Holotype species: Psilosiphon scoparius Entwisle

Original publication and holotype designation: Entwisle, T.J. (1989). Psilosiphon scoparium gen. et sp. nov. (Lemaneaceae), a new red alga from south-eastern Australian streams. Phycologia 28: 469-475.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as masculine.

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: Clumps of rigid, cylindrical, anodulate, sparsely branched thalli; olive-green to black. Thalli 14-33 mm long and 0.5-1.5 mm in diam. Uniaxial with profuse, loosely arranged, medullary filaments derived from basal cells of determinate laterals, and outer cortex of cells nearly uniform in size. Reproduction by formation of adventitious plantlets from cortical filaments and by production of erect axis from prostrate uniseriate filaments. Sexual reproduction unknown.

Information contributed by: R.G. Sheath. The most recent alteration to this page was made on 27 Aug 2012 by Wendy Guiry.

Comments: Rare genus, known from only two freshwater streams, one in New South Wales and one in southwest Tasmania, Australia. Humic, oligotrophic, pH <6, 16%C and specific conductance 80 &S cm-1. Autumn to spring.

Numbers of names and species: There is only one species or infraspecific name in the database at present, which has 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
Entwisle, T.J. (1989). Psilosiphon scoparium gen. et sp. nov. (Lemaneaceae), a new red alga from south-eastern Australian streams. Phycologia 28: 469-475.

Kumano, S. (2002). Freshwater Red Algae of the World. pp. [i-ii], i-xiv, 1-375 [p. 375 is an Addendum], pls 1-199. Bristol: Biopress Limited.

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

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Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42777

Citing AlgaeBase
Please cite this record as:
Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 11 December 2018.

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