Neogoniolithon Setchell & L.R.Mason, 1943

Holotype species: Neogoniolithon fosliei (Heydrich) Setchell & L.R.Mason

Original publication and holotype designation: Setchell, W.A. & Mason, L.R. (1943). Goniolithon and Neogoniolithon: two genera of crustaceous coralline algae. Proceedings of the National Academy of Science of the United States of America 29: 87-92.

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Description: Thalli comprising dorsiventral crusts sometimes roughened by protuberances; attached, or unattached and consisting of masses of protuberances. Haustoria lacking. Organized into one order of vegetative filaments (monomerous); the lowermost filaments in crusts arranged in decumbent arching tiers of cells (coaxial anatomy), cells in the protuberances not in arching tiers. Each vegetative filament containing a terminal or subterminal meristematic cell which can divide to produce epithallial cells outwardly and vegetative cells inwardly. Stratified elongate cells (palisade cells) lacking. Outermost walls of epithallial cells rounded or flattened, not flared. Cells in contiguous filaments often joined by fusions; secondary pit-connections lacking. Trichocytes sometimes present, occurring singly, in horizontal strata, or vertical series; either terminating filaments at the thallus surface or intercalary and buried below the surface. Reproductive cells forming within uniporate conceptacles. Tetrasporangial and bisporangial conceptacles with or without central columella; apical sporangial plugs absent. Gametangia poorly known.

Information contributed by: H.W. Johansen. The most recent alteration to this page was made on 2021-07-28 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as neuter.

Comments: Comments about the distribution and other facets of the biology of Neogoniolithon are almost meaningless in view of the uncertainty that exists in specimen identification. Possibly this genus is primarily tropical and subtropical. Neogoniolithon resembles Spongites more than it resembles other genera. However, the former has arching tiers of cells in crustose portions; Spongites does not.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 28 July 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 19 June 2024

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