Taxon Account

Brachysira praegeri B.Kennedy & Allott; 2017; 6

Key references

Kennedy B., Allott N. 2017. A review of the genus Brachysira in Ireland with the description of Brachysira praegeri and Brachysira conamarae, new raphid diatoms (Bacillariophyceae) from high status waterbodies. Phytotaxa. 326: 1-27.

Morphology

Shape
Valves lanceolate with convex margins and rounded non-protracted apices.

Symmetry
Isopolar, bilaterally symmetrical.

Striae
Lineate, uniseriate, radiate at centre changing to parallel and slightly convergent at apices.

Axial area
Narrow, linear.

Central area
Very small rounded-elliptical to barely discernible.

Raphe
Straight, filiform, proximal endings appear expanded in LM; one rib on either side of the raphe (SEM).


SEM morphology
Small protrusions on the virgae and often also in the central area.

Literature

References are given in chronological order.

Reference
Citation
Kennedy B., Allott N. 2017. A review of the genus Brachysira in Ireland with the description of Brachysira praegeri and Brachysira conamarae, new raphid diatoms (Bacillariophyceae) from high status waterbodies. Phytotaxa. 326: 1-27. Morphology; Taxonomy; Type Illustration; Description;

Similar Species

Similar species not published on this website:

This page should be cited as:

Kennedy B., Jüttner I. Brachysira praegeri B.Kennedy & Allott; 2017; 6. In: Jüttner I., Carter C., Chudaev D., 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 https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=4700. [Accessed:  ].

Image Gallery

Record last modified: 12/03/2022