Lectotype species: Lithophyllum incrustans Philippi
Original publication:Philippi, R.A. (1837). Beweis, dass die Nulliporen Pflanzen sind. Archiv für Naturgeschichte 3: 387-393, figs 2-6, pl. IX.
Type designated in Foslie, M. (1898). Systematical survey of the Lithothamnia. Det Kongelige Norske Videnskabers Selskabs Skrifter 1898(2): 1-7.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Woelkerling, W.J. (1988). The Coralline Red Algae: an analysis of the genera and subfamilies of nongeniculate Corallinaceae. pp. i-xi, 1-268, 259 figs, tables numbered by chapter. London & Oxford: British Museum (Natural History) & Oxford University Press.
According to Campbell & Woelkerling (1990), Titanoderma is a heterotypic synonym of Lithophyllum - (13 Mar 2009) - Wendy Guiry
Description: Thalli comprising dorsiventral, attached crusts sometimes beset with protuberances, or unattached subglobose masses. Crustose parts consisting of first-order filaments (primigenous filaments) only (monomerous) or both first- and second-order filaments (dimerous), the latter (postigenous filaments) at about right angles to the former. First-order filaments either arranged in decumbent, arching tiers of cells (coaxial anatomy) or curving upward toward the thallus surface (plumose anatomy). Cells in first-order filaments rarely stratified and elongated (palisade cells). Outermost walls of epithallial cells rounded or flattened, not flared. Cells in contiguous filaments often joined by secondary pit-connections; cell fusions absent. Trichocytes present or absent, but if present occurring singly.
Reproductive cells forming within uniporate conceptacles. Tetrasporangial and bisporangial conceptacles sometimes containing columellas. Apical sporangial plugs absent. Gametangia poorly known.
Information contributed by: H.W. Johansen & M.D. Guiry. The most recent alteration to this page was made on 20 Jan 2017 by M.D. Guiry.
Comments: Bispores produced instead of tetraspores in some species, e.g., in L. incrustans in the British Isles where the incidence of bispore production increases from south to north and the proportion of sexual plants decreases. Dominating rocky surfaces below 25 m off S. California.
Numbers of names and species: There are 271 species names in the database at present, as well as 126 infraspecific names. Of the species names, 127 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.
Basso, D., Caragnano, A. & Rodondi, G. (2014). Trichocytes in Lithophyllum kotschyanum and Lithophyllum spp. (Corallinales, Rhodophyta) from the NW Indian Ocean. Journal of Phycology 50(4): 711-717.
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: 01 January 2001 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=95
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 20 June 2019.