155,542 species and infraspecific names are in the database, 21,916 images, 60,163 bibliographic items, 438,693 distributional records.

Palisada K.W.Nam, 2007

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

Holotype species: Palisada robusta K.W.Nam

Original publication and holotype designation: Nam, K.W. (2007). Validation of the generic name Palisada (Rhodomelaceae, Rhodophyta). Algae (The Korean Journal of Phycology) 22(2): 53-55, 1 table.
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Taxonomic status: currently recognized as a distinct genus.

Most recent taxonomic treatment adopted: Metti, Y. Huisman, J.M. & Millar, A.J.K. (2018). Palisada. In: Algae of Australia. Marine benthic algae of north-western Australia. 2. Red algae. (Huisman, J.M. Eds), pp. 552-554. Canberra & Melbourne: ABRS & CSIRO Publishing.

Description: Thallus erect, cartilaginous or not, radially or distichously branched; axes terete or compressed; apical pits with trichoblasts, usually emergent. Polysiphonous; each axial cell with 2 pericentral cells, but these generally only distinguishable in sections from near apices. In transverse section view, the first pericentral cell is positioned beneath the trichoblast basal cell. Medulla of large hyaline cells, grading to a cortex of smaller pigmented cells; in some species an epidermal layer forming a palisade. No secondary connections formed between epidermal cells, as seen in longitudinal sections (except P. parvipapillata). Spermatangial development on 1 of 2 laterals of the suprabasal cell of fertile trichoblasts. Procarp-bearing segments with 4 or 5 cells. Tetrasporangia tetrahedrally divided, originating from 1 of 2 pericentral cells on a tetrasporangial axis, the other remaining sterile. Tetrasporangia arranged at right angles to the main axis.

Information contributed by: Metti <i>et al.</i> (2018). The most recent alteration to this page was made on 9 Oct 2018 by M.D. Guiry.

Numbers of names and species: There are 29 species names in the database at present, as well as 1 infraspecific names. Of the species names, 25 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
Wynne, M.J. & Schneider, C.W. (2010). Addendum to the synoptic review of red algal genera. Botanica Marina 53: 291-299.

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: 07 February 2008 by M.D. Guiry

Verified by: 09 October 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=50822

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 17 June 2019.

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