Holotype species: Delamarea paradoxa Hariot
Currently accepted name for the type species: Delamarea attenuata (Kjellman) Rosenvinge
Original publication and holotype designation: Hariot, P. (1889). Liste des algues recuillie à l'île Miquelon par M. le dr. Delamare. Journal de Botanique (Morot) 3: 154-157, 181-183, 194-196.
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.
Description: Erect thallus summer annual, solitary or caespitose, epilithic attached by a cushion like holdfast composed of interwoven rhizoidal filaments, filiform, simple, attenuated towards the base, olive to brown in color, up to about 10 cm in height, parenchymatous, solid when young and becoming hollow with age, composed of 1-2 layers of large colorless inner cells and pigmented peripheral cells which later elongate into develop into clavate paraphyses. Phaeophycean hairs present. Plurilocular sporangia conical to lanceolate. Unilocular sporangia sessile and ovate to irregular in shape. Plurilocular and unilocular sporangia usually borne on separate thalli, but occasionally mixed. Chloroplasts many discoid with pyrenoids. As to the systematic position of Delamarea, Zinova (1953) established the family Delamareaceae. Later Lund (1959) established the order Delamareales for this family presuming that Delamarea has isomorphic alternation of generations. However, Pedersen (1974) demonstrated heteromorphic life history in the species in culture and proposed placing the Delamareales in synonymy with the Dictyosiphonales with the family Delamareaceae.
Information contributed by: H. Kawai. The most recent alteration to this page was made on 20 Jun 2014 by M.D. Guiry.
Comments: Distributed in the cold water area of northern hemisphere.
Numbers of names and species: There are 2 species names in the database at present, of which 1 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.
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: 20 June 2014 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=38142
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 September 2020.