Taxon Account

Staurosirella D.M.Williams & Round; 1987; 274

Key references

Williams D.M., Round F.E. 1987. Revision of the genus Fragilaria. Diatom Research. 2(2): 267-288.


Small cells, frustules can form colonies, with cells connected at the valve face with spines or with mucilage pads at the edges of the valves.

Valves elliptical, linear or cruciform. Striae uniseriate, extending onto the mantle, with long, slit-like areolae containing finely branched occlusions.

One or two apical pore fields of variable size present at the apices. Rimoportula absent.

Spines simple, bifurcate or branched, situated on valve face/mantle junction between rows of areolae.

Mantle plaques often present.

Cingulum consisting of several plain, open and ligulate copulae with granulose abvalvar margins; valvocopula large, relative to copulae, each with fimbriate advalvar margin.


References are given in chronological order.

Williams D.M., Round F.E. 1987. Revision of the genus Fragilaria. Diatom Research. 2(2): 267-288. Morphology; Taxonomy; Description; Type Illustration;
Le Cohu R. 1999. Révision des principales espèces de Fragilariales (Bacillariophyta) des îles Kerguelen. Canadian Journal of Botany. 77: 821-834. Morphology; Taxonomy; Illustrations
Morales E.A. 2003. On the taxonomic status of the genera Belonastrum and Synedrella proposed by Round and Maidana (2001). Cryptogamie, Algologie. 24(3): 277-288. Morphology; Taxonomy; Illustrations
Morales E.A. 2005. Observations of the morphology of some known and new fragilarioid diatoms (Bacillariophyceae). Phycological Research . 53: 113-133. Morphology; Taxonomy; Illustrations
Morales E.A., Manoylov K.M. 2006. Morphological studies on selected taxa in the genus Staurosirella Williams et Round (Bacillariophyceae) from rivers in North America. Diatom Research. 21(2): 343-364. Morphology; Taxonomy; Illustrations
Paull T.M., Hamilton P.B., Gajewski K., LeBlanc M. 2008. Numerical analysis of small Arctic diatoms (Bacillariophyceae) representing the Staurosira and Staurosirella species complexes. Phycologia. 47(2): 213-224. Morphology; Illustrations
Morales E.A., Manoylov K.M., Bahls L.L. 2010. Three new araphid diatoms (Bacillariophyta) from rivers in North America. Proceedings of the Academy of Natural Sciences of Philadelphia. 160: 29-46. Morphology; Taxonomy; Illustrations
Morales E.A., Wetzel C.E., Ector L. 2010. Two short-striated species of Staurosirella (Bacillariophyceae) from Indonesia and the United States. Polish Botanical Journal. 55(1): 107-117. Morphology; Taxonomy; Illustrations
Medlin L., Yang I., Sato S. 2012. Evolution of the diatoms: VII. Four gene phylogeny assess the validity of selected araphid genera. Nova Hedwigia, Beiheft. 141: 505-514. Biology
Morales E.A., Guerrero J.M., Wetzel C.E., Sala S., Ector L. 2013. Unravelling the identity of Fragilaria pinnata Ehrenberg and Staurosira pinnata Ehrenberg: research in progress on a convoluted story. Cryptogamie, Algologie. 34(2): 89-102. Taxonomy
Morales E.A., Buczkó K., Wetzel C.E., Novais M.H., Ognjanova-Rumenova N., Hoffmann L., Ector L. 2014. Transfer of Staurosira grunowii to Staurosirella. Diatom Research. 29(2): 105-110. Morphology; Taxonomy; Type Illustration
Stoof-Leichsenring K.R., Bernhardt N., Pestryakova L.A., Epp L.S., Herzschuh U., Tiedemann R. 2014. A combined paleolimnological/genetic analysis of diatoms reveals divergent evolutionary lineages of Staurosira and Staurosirella (Bacillariophyta) in Siberian lake sediments along a latitudinal transect. Journal of Paleolimnology. 52: 77-93. Ecology; Biology
Van de Vijver B., Morales E.A., Kopalová K. 2014. Three new araphid diatoms (Bacillariophyta) from the Maritime Antarctic Region. Phytotaxa. 167(3): 256-266. Morphology; Taxonomy; Illustrations
Morales E.A., Wetzel C.E., Van de Vijver B., Ector L. 2015. Morphological studies on type material of widely cited araphid diatoms (Bacillariophyta). Phycologia. 54(5): 455-470. Morphology; Taxonomy; Illustrations
Almeida P.D., Wetzel C.E., Morales E.A., Ector L., Bicudo D.C. 2015. Staurosirella acidophila sp. nov., a new araphid diatom (Bacillariophyta) from southeastern Brazil: ultrastructure, distribution and autecology. Cryptogamie, Algologie. 36(3): 255-270. Morphology; Taxonomy; Illustrations; Ecology
Ognjanova-Rumenova N., Buczkó K., Wojtal A.Z., Jahn R. 2015. Staurosirella rhombus (Ehrenberg), Ognjanova-Rumenova, Buczkó, Wojtal & R. Jahn, comb. nov. - typification, morphology and biostratigraphic significance. Phytotaxa. 218(3): 279-288. Morphology; Taxonomy; Illustrations
Reavie E.D., Kireta A.R. 2015. Centric, Araphid and Eunotioid Diatoms of the Coastal Laurentian Great Lakes. 62. Bibliotheca Diatomologica. 184 pp Morphology; Ecology; Illustrations
Peeters V., Ector L. 2017. Atlas des diatomées des cours d'eau du territoire bourguignon. Vol.1. Direction Régionale de l'Environnement, de l'Aménagement et du Logement Bourgogne-Franche-Comté, Dijon. 309 pp. Morphology; Illustrations
Seeligmann C.T., Maidana N.I., Morales E.A. 2018. Fragilariaceae (Bacillariophyta) en humedales de altura de Catamarca (Argentina). Boletin de la Sociedad Argentina de Botanica. 53(4): 507-519. Morphology; Taxonomy; Illustrations
Morales E.A., Wetzel C.E., Haworth E.Y., Ector L. 2019. Ending a 175-year taxonomic uncertainty: Description of Staurosirella neopinnata sp. nov. (Bacillariophyta) to accomodate Fragilaria pinnata, a highly misconstrued taxon with a purported worldwide distribution. Phytotaxa. 402(2): 75-87. Morphology; Taxonomy; Type Illustration
Guerrero J.M., Garcia M.L., Morales E. 2019. Staurosirella andino-patagonica sp. nov. (Bacillariophyta) from lake sediments in Patagonia, Argentina. Phytotaxa. 402(3): 131. Morphology; Taxonomy; Illustrations
Osório N.C., Ector L., Rodrigues L., Wetzel C.E. 2021. Staurosirella paranaensis sp. nov., a new epiphytic freshwater diatom (Bacillariophyceae) from the Paraná River floodplain, Brazil, South America. Phytotaxa. 480(2): 163-173. Morphology; Illustrations; Taxonomy
This page should be cited as:

Jüttner I., Williams D.M., Ector L., Wetzel C.E., Van de Vijver B. Staurosirella D.M.Williams & Round; 1987; 274. In: Jüttner I., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M.. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at [Accessed:  ].

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Record last modified: 02/04/2021