Taxon Account

Achnanthidium modestiforme (Lange-Bertalot) Van de Vijver; 2002; 17

Synonymy

Achnanthes modestiformis Lange-Bertalot in Lange-Bertalot & Krammer 1989
Achnanthes modesta Manguin in Bourrelly & Manguin 1954

Key references

Le Cohu R. 2005. Révision des principales espèces dulcaquicoles d'Achnanthales (Bacillariophyta) des îles subantarctique de Kerguelen. Algological Studies. 116: 79-114.

Morphology

Shape
Valves lanceolate to elliptic with broadly rounded rostrate to subcapitate ends.

Symmetry
Valves isopolar.

Valve
Frustules heterovalvate.

Striae
Radiate throughout, slightly wider spaced in the valve centre.

Axial area
Narrow, linear, slightly widening towards the valve centre on the rapheless valve.

Central area
Small rounded central area on the raphe valve; small, elliptical on the rapheless valve.

Raphe
Simple, filiform raphe on one valve with straight proximal and distal raphe ends.

Literature

References are given in chronological order.

Reference
Citation
Bourrelly P., Manguin E. 1954. Contribution à la Flore Algale d'eau Douce des Iles Kerguelen. Mémoires de L'Institut Scientifique de Madagascar, séries B. 5: 5-58. Description; Type Illustration; Morphology; Taxonomy
Lange-Bertalot H., Krammer K. 1989. Achnanthes eine Monographie der Gattung mit Definition der Gattung Cocconeis und Nachträgen zu den Naviculaceae. Bibliotheca Diatomologica Vol. 18. 393 pp; 100 pls Type Illustration
Van de Vijver B., Frenot Y., Beyens L. 2002. Freshwater diatoms from Ile de la Possession (Crozet Archipelago, Subantarctica). 46. Bibliotheca Diatomologica, J. Cramer, Berlin. Morphology; Taxonomy; Illustrations
Le Cohu R. 2005. Révision des principales espèces dulcaquicoles d'Achnanthales (Bacillariophyta) des îles subantarctique de Kerguelen. Algological Studies. 116: 79-114. Morphology; Illustrations;

Similar Species

Similar species not published on this website:

Achnanthes pericava J.R. Carter; 1966; 457

Achnanthidium tepidaricola Van de Vijver & M. de Haan; 2011; 201/203

This page should be cited as:

Jones V., Cox E. J., Jüttner I. Achnanthidium modestiforme (Lange-Bertalot) Van de Vijver; 2002; 17. In: Jüttner I., Bennion H., Carter C., Cox E.J., Ector L., Flower R., Jones V., Kelly M.G., Mann D.G., Sayer C., Turner J. A., Williams D.M.. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=4355. [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020