Spicaticribra J.R.Johansen, J.P.Kociolek & R.Lowe, 2008

Holotype species: Spicaticribra kingstonii J.R.Johansen, Kociolek & R.L.Lowe

Original publication and holotype designation: Johansen, J.[R.], Kociolek, [J.]P. & Lowe, R.[L.] (2008). Spicaticribra kingstonii, gen. nov. et sp. nov. (Thalassiosirales, Bacillariophyta) from Great Smoky Mountains National Park, U.S.A.. Diatom Research 23(2): 367-375, 24 figs.

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Description: Frustules cylindrical. Valves flat, with a ring of prominent marginal fultoportulae and marginal rimoportulae. Marginal fultoportulae with slightly raised external projections and elongated internal extensions, each with three satellite pores. Central fultoportulae absent. Rimoportulae lacking differentiated external expressions. Striae straight, with radial, nonfasciculate pattern. Areolae round externally, covered by long, spicate, anastomosing cribra internally. Central areolae round to irregular in shape, with external openings three to six times larger than other areolae.

Origin of description: this description is from the original publication; it may have been modified slightly. The most recent alteration to this page was made on 2018-02-14 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Khursevich, G. & Kociolek, J.P. (2012). A preliminary, worldwide inventory of the extinct, freshwater fossil diatoms from the orders Thalassiosirales, Stephanodiscales, Paraliales, Aulacoseirales, Melosirales, Coscinodiscales, and Biddulphiales. Nova Hedwigia Beiheft 141: 315-364, no figs.

Comments: Differs from all other genera in the Thalassisosiraceae Lebour emend Hasle by the combination of spicate, anastomosing cribral pattern on the interior valve surface, absence of central fultoportulae on the valve face and absence of external extensions of marginal strutted processes.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=51482

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 14 February 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024