Aegagropila Kützing, 1843
Lectotype species: Aegagropila linnaei Kützing
Original publication and holotype designation: Kützing, F.T. (1843). Phycologia generalis oder Anatomie, Physiologie und Systemkunde der Tange. Mit 80 farbig gedruckten Tafeln, gezeichnet und gravirt vom Verfasser. pp. [part 1]: [i]-xxxii, -142, [part 2:] 143-458, 1, err.], pls 1-80. Leipzig: F.A. Brockhaus.
Precise date of publication14-16 September
Taxonomic status: currently recognized as a distinct genus.
Gender: This genus name is currently treated as feminine.
Most recent taxonomic treatment adopted: Boedeker, C., O'Kelly, C.J., Star, W. & Leliaert, F. (2012). Molecular phylogeny and taxonomy of the Aegagropila clade (Cladophorales, Ulvophyceae), including the description of Aegagropilopsis gen. nov. and Pseudocladophora gen. nov. Journal of Phycology 48(3): 808-825.
Four species of the genus are listed by Kützing (1843: 272-273): A. Linnaei, A. Agardhii, A. Sauteri, A. cornea. A type was not designated by Kützing. - (7 Mar 2018) - M.D. Guiry
Description: Thalli dark to bright green, forming loose spherical aggregates, unattached solid or hollow balls, or attached stiff tufts, cushions or carpets up to 3 cm high, composed of densely and irregularly branched, uniseriate filaments. Branches formed laterally or subterminally on cells, with vertical or steeply inclined cross walls; older cells often producing a second and third branch, opposite or serial. Intercalary cell divisions dominant in lower parts, feebly acropetal organization in apical parts. Older cells in basal parts of the thallus typically club-shaped, frequently also very irregular and enlarged, with branches inserted in various positions. Apical cells frequently lost in unattached thalli, probably due to abrasion. Complete inversion of polarity common in the lower part of the thallus, with branches growing in opposite direction to that of the terminal filaments; and polarity is frequently lost during later development in the unattached forms. The basal poles of the cells can give off adventitious rhizoids which may wind around or attach to other filaments. In unattached forms, rhizoids may be produced at the base of the cells, attaching themselves by coralloid holdfasts. Numerous polypyramidal pyrenoids.
Information contributed by: Skaloud et al. (2018: 181).. The most recent alteration to this page was made on 16 Mar 2018 by M.D. Guiry.
Comments: Differences in growth form and morphology have led to the description of several ball-forming species, but these are part of the large natural variation of the only species of the genus, A. linnaei (Waern, 1952; Sakai & Enomoto, 1960; Hoek, 1963; Niiyama, 1989; Boedeker et al., 2010a).
Numbers of names and species: There are 50 species names in the database at present, as well as 8 infraspecific names. Of the species names, 7 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.
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: 26 October 2007 by M.D. Guiry
Verified by: 07 March 2018 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=50801
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.