153,840 species and infraspecific names are in the database, 21,012 images, 59,576 bibliographic items, 413,468 distributional records.

Ecklonia Hornemann, 1828

Classification:
Empire Eukaryota
Kingdom Chromista
Phylum Ochrophyta
Class Phaeophyceae
Subclass Fucophycidae
Order Laminariales
Family Lessoniaceae

Holotype species: Ecklonia buccinalis (Linnaeus) Hornemann

Currently accepted name for the type species: Ecklonia maxima (Osbeck) Papenfuss

Original publication and holotype designation: Hornemann, J.W. (1828). Om Fucus buccinalis Lin. Kongelige Danske Videnskabernes Selskabs Naturvidenskabelige og Mathematiske Afhandlinger 3: 379-390, 1 folded plate.

Taxonomic status: currently recognized as a distinct genus.

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.

Taxonomic notes
Arthrothamnaceae (Jackson et al., 2017). - (2 May 2017) - Wendy Guiry

Description: Sporophyte thallus 1-15 m long with a holdfast of much- branched haptera, each producing a single plant (except in E. stolonifera). Stipes terete, solid or hollow, 2 cm to 12 m long, in E. maxima expanding distally to form a gas-filled float. Single primary blade arising from transition with stipe. Generally elongate secondary blades developing proximally from marginal teeth initiated in the transition region and disintegrating distally along the margins of the primary blade. One species (E. stolonifera) with secondary blades reduced to short dentate projections. Blades smooth, longitudinally rugose (in some species only when juvenile) or spinose, with smooth or dentate margins. Sporophytes of most species incapable of vegetative propagation, but one species (E. stolonifera) with spreading holdfast producing many uprights, and one species (E. brevipes) propagating by attachment of secondary holdfast tissue produced from blades. Anatomy typical of Laminariales; mucilage ducts present or absent. Reproductive sorus formed primarily, but not exclusively, on secondary blades, except in E. stolonifera. Structure of sporophyte sorus and microscopic gametophytes typical of Laminariales. Species taxonomy is in need of revision. A number of species described in specific regions may be variants of E. radiata sensu lato. Very different species are capable of hybridisation.

Information contributed by: J. J. Bolton. The most recent alteration to this page was made on 21 Jun 2014 by M.D. Guiry.

Comments: Occurs in many warm temperate regions, dominating extensive kelp beds in Australia, New Zealand, South Africa, and the north western Pacific. Rare in northeast Atlantic, and absent from northeast Pacific and northwest Atlantic. Recorded as extending into tropical conditions in Western Australia and the Gulf of Iran.

Numbers of names and species: There are 18 species names in the database at present, as well as 6 infraspecific names. Of the species names, 13 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
Bolton, J.J. & Anderson, R.J. (1994). Ecklonia. In: Biology of Economic Algae. (Akatsuka, I. Eds), pp. 385-406. The Hague: Academic Publishing.

Jackson, C., Salomaki, E.D., Lane, C.E. & Saunders, G.W. (2017). Kelp transcriptomes provide robust support for interfamilial relationships and revision of the little jnown Arthrothamnaceae (Laminariales) (Letter). Journal of Phycology 53(1): 1-6.

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: 01 January 2001 by M.D. Guiry

Verified by: 21 June 2014 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=35713

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 13 December 2018.

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