Draparnaldia Bory, 1808
Lectotype species: Draparnaldia mutabilis (Roth) Bory
Original publication:Bory de Saint-Vincent, [J.B.G.M.] (1808). Mémoire sur le genre Draparnaldia, de la famille des Conferves (Voyez la planche 35).. Annales du Muséum d'Histoire Naturelle 12: 399-409, pls 35.
Type designated in Hazen, T.E. (1902). The Ulothricaceae and Chaetophoraceae of the United States. Memoirs of the Torrey Botanical Club 11: 135-250.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Burova, O.V., Tsarenko, P.M., Kovalenko, O.V., Petlovany, O.A., Mikhailyuk, T.I. & Lilitska, G.G. (2011). Chaetophorales. In: Algae of Ukraine: diversity, nomenclature, taxonomy, ecology and geography. Volume 3: Chlorophyta. (Tsarenko, P.M., Wasser, S.P. & Nevo, E. Eds), pp. 264-278. Ruggell: A.R.A. Gantner Verlag K.-G.
Description: Plants embedded in soft mucilagenous envelope, consist of erect, branched, uniseriate filaments. Main axes of large barrel-shaped, cylindrical or rectangular cells, attached basally by rhizoids. Cells of main axes each with large parietal, band-shaped, entire or reticulate chloroplast with smooth or laciniate margin, and several pyrenoids. Laterally on main axes arise fascicles of secondary branches intercalary cells of which contain single laminate chloroplast covering almost entire wall. Terminally cells bluntly pointed or bearing long multicellular hair. Secondary branches very divided, often tufted in appearance, each cell with parietal chloroplast and 1-3 pyrenoids. Cells uninucleate. Reproductive cells produced in secondary branches. Asexual reproduction by biflagellate zoospores and thick-walled aplanospores. Sexual reproduction isogamous with quadriflagellate gametes. Draparnaldia probably cosmopolitan, growing on variety of surfaces in wide range of freshwater habitats. Recognition of species based on size and shape of cells, form of side branches, chloroplast shape and presence or absennce of setae. The genus exhibits considerable morphological plasticity in response to differences in both physical and chemical environment. An ultrastructural investigation of the type species revealed plasmodesmata, a phycoplast, and pyrenoids with appressed membranes.
Information contributed by: D.M. John. The most recent alteration to this page was made on 26 Jan 2012 by M.D. Guiry.
Numbers of names and species: There are 34 species names in the database at present, as well as 8 infraspecific names. Of the species names, 18 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.
Caisová, L., Marin, B., Sausen, N., Proschold, T. & Melkonian, M. (2011). Polyphyly of Chaetophora and Stigeoclonium within the Chaetophorales (Chlorophyceae), revealed by sequence comparisons of nuclear-encoded SSU rRNA genes. Journal of Phycology 47(1): 164-177.
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: 11 April 2002 by M.D. Guiry
Verified by: 26 January 2012 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43361
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 15 October 2019.