152,895 species and infraspecific names are in the database, 20,947 images, 59,136 bibliographic items, 408,271 distributional records.

Portieria Zanardini, 1851

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Gigartinales
Family Rhizophyllidaceae

Holotype species: Portieria coccinea Zanardini

Currently accepted name for the type species: Portieria hornemannii (Lyngbye) P.C.Silva

Original publication and holotype designation: Zanardini, G. (1851). Algae novae vel minus cognitae in mari Rubro a Portiero collectae. Flora 34: 33-38.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Payo, D.A., Leliaert, F., Verbruggen, H., D'hondt, S., Calumpong, H.P. & De Clerck, O. (2013). Extensive cryptic species diversity and fine-scale endemism in the marine red alga Portieria in the Philippines. Proceedings of the Royal Society of London B Biological Sciences 280: 20122660.

Description: Plants reach 12 cm in height, are recumbent to erect from an encrusting base, and consist of flattened, irregularly bi/tripinnate fronds growing from inrolled apices. Gland cells are scattered in both nemathecial and normal cortical tissue. Carpogonial branches are 3- or 4-celled, the basal cell being conspicuously enlarged, and auxiliary-cell branches are 3(-4) celled, both appearing to be homologous structures. Following fertilization all cells except the basal cell fuse and 1 or 2 connecting filaments issue from near the base of the carpogonial fusion cell. Connecting filaments fuse laterally with auxiliary cells and re-emerge as additional connecting filaments from the opposite side of the auxiliary cell, although occasionally connecting filaments fork prior to fusing with auxiliary cells. Several gonimoblast initials arise on the auxiliary cell and develop thallus-outwardly among nemathecial filaments, forming compartments of densely clustered carposporangia surrounded by a pericarp. The cystocarpic development of Portieria (as Chondrococcus) has recently been followed in the unpublished work of Itono.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 7 Jan 2013 by M.D. Guiry.

Comments: Distribution: The type species was originally described from the Red Sea and is recorded from widespread localities in the Indian and eastern and central Pacific Oceans such as Hawaii, Japan, the Philippines, eastern Australia, Mauritius and South Africa. Although some 10 species are credited to the genus, Wiseman (pers. comm.) considers that all represent minor variations of the type species. Silva ln Silva et al. (1987) recognizes 6 species.

Numbers of names and species: There are 9 species names in the database at present, of which 7 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
Leliaert, F., Payo, D.A., Gurgel, C.F.D., Shils, T., Draisma, S.G.A., Saunders, G.W., Kamiya, M., Sherwood, A.R., Lin, S.-M., Huisman, J.M., Le Gall, L., Anderson, R.J., Bolton, J.J., Mattio, L., Zubia, M., Spoke, T., Viera, C., Payri, C.E., Coppejans, E., D'hondt, S., Verbruggen, H. & De Clerck, O. (2018). Patterns and drivers of species diversity in the Indo-Pacific red seaweed Portieria. Journal of Biogeography 2018: 1-15.

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: 07 January 2013 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=34461

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 21 September 2018.

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