155,248 species and infraspecific names are in the database, 21,864 images, 60,041 bibliographic items, 435,057 distributional records.

Ptilopogon Reinke, 1890

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Phaeophyceae
Subclass Dictyotophycidae
Order Sphacelariales
Family Stypocaulaceae

Holotype species: Ptilopogon botryocladus (J.D.Hooker & Harvey) Reinke

Original publication and holotype designation: Reinke, J. (1890). √úbersicht der bisher bekannten Sphacelariaceen. Berichte der Deutsche Botanischen Gesellschaft 8: 201-215, 2 figs.

Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as masculine.

Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156.

Nomenclatural notes
In accordance with Art. 62.2 [Melbourne Code], compounds ending in -pogon are masculine. - (15 Aug 2017) - M.D. Guiry

Description: Plants forming 5-20 cm tall, olive-brown to dark golden brown, erect tufts with one to several heterotrichous axes. Basal parts consisting of small or extensive, polystromatic, crustose discs, often covered by matted descending cortical rhizoids arising from the lower parts of the axes. Axes and indeterminate laterals prominent, erect, terete, auxocaulous, black, smooth and wiry. Branching of several orders: determinate laterals in short, straight, sparsely and irregularly pinnately branched tufts, clothed more or less evenly and densely on all sides of the lax indeterminate laterals. Forming one lenticular branch initial from each conspicuous cylindrical apical cell before a segment is cut off. Segments each dividing transversely once preceeding frequent longitudinal and transverse segmentation and secondary growth. Internal structure of axes composed of rather large, quadrangular, medullary cells, smaller inner cortical cells and radiating files of outer cortex, often in several layers and separated by dark, thickened cell walls. Woolly descending rhizoids arising only in the lower parts of the axes . Hairs unknown. Pericysts absent. Reproductive structures: solitary plurilocular gametangia and unilocular zoidangia in globular small tufts composed of branched incurled filaments. Marine in tidal pools and in sublittoral. Temperate southern hemisphere (New Zealand, S.E. Australia). The diplohaplontic life history is probably isomorphic, anisogamic and monoecious.

Information contributed by: Prud'homme van Reine. The most recent alteration to this page was made on 15 Aug 2017 by M.D. Guiry.

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.

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: 15 August 2017 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=42578

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 19 May 2019.

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