Fosliella M., 1920
Holotype species: Fosliella farinosa (J.V.Lamouroux) M.Howe
Original publication and holotype designation: Howe, M.A. (1920). Algae. In: The Bahama flora. (Britton, N.L. & Millspaugh, C.F. Eds), pp. 553-618. New York: published by the authors.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. I. pp. [i]-xxxxviii, 1-762. Thessaloniki: Published and distributed by the author.
Description: Thalli comprising dorsiventral crusts <200 um thick in most species; some species composed of unconsolidated filaments. Vegetative parts of thalli consisting of two orders of filaments (dimerous), first-order filaments (primigenous filaments) growing along the substrate in a unistratose layer and second-order filaments (postigenous filaments) growing upward from them at about right angles to the substrate. Second-order filaments sometimes consisting only of single epithallial cells (in which case thallus is two cells thick). Sometimes second-order filaments 2-5 cells long each terminating in an epithallial cell in which case penultimate cells are meristematic and capable of dividing to produce epithallial cells upward and vegetative cells below. Epiphytic on algae and seagrasses, or epilithic; adhering firmly, but lacking hausteria. Each spore germinating into a 4-celled sporeling from which the remainder of thallus is derived. Outermost walls of epithallial cells rounded or flattened, not flared. Cells in contiguous filaments sometimes joined by fusions; secondary pit-connections unknown. Trichocytes sometimes present as terminal cells of first-order filaments or intercalary in second-order filaments. Reproductive cells forming in protruding uniporate conceptacles. Bisporangia sometimes present. Apical sporangial plugs absent. Gametangia poorly known.
Information contributed by: H.W. Johansen. The most recent alteration to this page was made on 20 Jan 2017 by M.D. Guiry.
Comments: Fosliella is apparently widespread as an early colonizer of available surfaces on rocks, algae, and seagrasses. Harlin et al (1985) reported that 4 species of Fosliella were intolerant of increasing salinity in Shark Bay, Western Australia. Fosliella has a complicated nomenclatural history. Furthermore, aside from the publications listed below, monographic studies are lacking. For numerous reasons the genus is most closely related to Pneophyllum and Spongites.
Numbers of names and species: There are 25 species names in the database at present, as well as 5 infraspecific names. Of the species names, 5 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: 28 December 2000 by M.D. Guiry
Verified by: 20 January 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=33905
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 24 April 2019.