Margaritum H.Moreira Filho, 1968

Holotype species: Margaritum terebro (Leuduger-Fortmorel) Moreira Filho

Original publication and holotype designation: Moreira Filho, H. (1968). Margaritum (Podosira) tenebro (Leud.-Fort.) nov. genus e nov. comb. (Chrysophyta - Bacillariophyceae). Bolm. Univ. Fed. Paraná: sér. bot., Curitiba, 20: 1-2, pl. 1-2.

Description: Frustules solitary. Valves circular in outline, 30-50 _m in diam., valve face extremely convex. Valve margin hyaline with approximately 22-23 striae in 10_. Pearl-like hemispheres are irregularly distributed on the valve face among regularly placed puncta. The presence of these hemispheres is used to distinguish Margaritum from Podosira and Melosira. Further study is necessary to determine the validity and systematic position of this genus. Collected from marine coastal waters off Sierra Leon (west Africa) and Brazil.

Information contributed by: D. B. Czarnecki. The most recent alteration to this page was made on 2016-11-22 by Salvador Valenzuela Miranda.

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

Most recent taxonomic treatment adopted: Souza-Mosimann, R.M. de; Fernandes, L.F. & T.V. Ludwig (1997). The estuarine benthic diatom Margaritum terebro (Bacillariophyta, Hyalodiscaceae): morphology and taxonomy. Rev. bras. oceanogr. 45(1/2): 45-52.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=46909

Citing AlgaeBase
Cite this record as:
Salvador Valenzuela Miranda in Guiry, M.D. & Guiry, G.M. 22 November 2016. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 28 March 2024

 
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