Taxon Account

Achnanthidium sublineare Van de Vijver, Jarlman & Ector; 2011; 179,182

Key references

Van de Vijver B., Ector L., Beltrami M.E., De Haan M., Falasco E., Hlúbiková D., Jarlman A., Kelly M., Novais M., Wojtal A.Z. 2011. A critical analysis of the type material of Achnanthidium lineare W. Sm. (Bacillariophyceae). Algological Studies. 136/137: 167-191.

Heudre D., Wetzel C.E., Van de Vijver B., Moreau L., Ector L. 2019. Two sub-Antarctic and Northern Europe distributed diatom species found in a middle-mountain lake in France. Botany Letters. 166(2): 212-220.

Morphology

Size
8.5-13 µm long, 1.5-2.1 µm wide (UK population); 7.5-15.0 µm long, 1.5-2.1 µm wide (Van de Vijver et al. 2011); 6.0-19.0 µm long, 1.3-2.0 µm wide (Heudre et al. 2019).

Shape
Valves linear, margins can taper slightly towards broadly rounded ends.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Striae weakly radiate near valve centre, becoming strongly radiate near valve ends; 32-34 in 10 µm (Van de Vijver et al. 2011, Heudre et al. 2019).

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

Central area
Transverse fascia on the raphe valve, small slightly widened, irregular central area on the rapheless valve.

Raphe
Filiform raphe with straight, drop-shaped proximal ends and distal fissures.


SEM morphology
Most striae composed of two areolae, few striae composed of three areolae. Areolae adjacent to the axial area rounded, adjacent to the margins often slit-like, near valve ends rounded.

Literature

References are given in chronological order.

Reference
Citation
Van de Vijver B., Ector L., Beltrami M.E., De Haan M., Falasco E., Hlúbiková D., Jarlman A., Kelly M., Novais M., Wojtal A.Z. 2011. A critical analysis of the type material of Achnanthidium lineare W. Sm. (Bacillariophyceae). Algological Studies. 136/137: 167-191. Morphology; Taxonomy; Description; Type Illustration;
Heudre D., Wetzel C.E., Van de Vijver B., Moreau L., Ector L. 2019. Two sub-Antarctic and Northern Europe distributed diatom species found in a middle-mountain lake in France. Botany Letters. 166(2): 212-220. Morphology; Illustrations; Ecology;
This page should be cited as:

Jüttner I., Van de Vijver B., Ector L. Achnanthidium sublineare Van de Vijver, Jarlman & Ector; 2011; 179,182. 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=4618. [Accessed:  ].

Image Gallery

Record last modified: 27/12/2020