Encyonema brevicapitatum Krammer; 1997; 100,101
Key references
Krammer K. 1997. Die cymbelloiden Diatomeen - Eine Monographie der weltweit bekannten Taxa. Teil 1. Allgemeines und Encyonema Part. Bibliotheca Diatomologica, Vol. 36, J. Cramer, Berlin. 382 pp
Morphology
Size
11.8-19.0 µm long, 4.5-7.2 µm wide (UK population), 12-25 µm long, 4.5-6 µm wide (Krammer 1997).
Shape
Valves cymbelloid with convex dorsal margin, ventral margin straight or slightly gibbous; protracted ends rostrate or subcapitate and often clearly deflected to the ventral side.
Symmetry
Dorsiventral.
Striae
Striae slighty radiate dorsally, ventrally slightly radiate or parallel in the central section, becoming slightly convergent towards the poles.
Axial area
Narrow, straight.
Central area
Not differentiated from the axial area.
Raphe
Appears straight, displaced towards the ventral margin, with slightly expanded, slightly dorsally bent proximal endings, and short ventrally deflected terminal fissures near the poles.
11.8-19.0 µm long, 4.5-7.2 µm wide (UK population), 12-25 µm long, 4.5-6 µm wide (Krammer 1997).
Shape
Valves cymbelloid with convex dorsal margin, ventral margin straight or slightly gibbous; protracted ends rostrate or subcapitate and often clearly deflected to the ventral side.
Symmetry
Dorsiventral.
Striae
Striae slighty radiate dorsally, ventrally slightly radiate or parallel in the central section, becoming slightly convergent towards the poles.
Axial area
Narrow, straight.
Central area
Not differentiated from the axial area.
Raphe
Appears straight, displaced towards the ventral margin, with slightly expanded, slightly dorsally bent proximal endings, and short ventrally deflected terminal fissures near the poles.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Krammer K. 1997. Die cymbelloiden Diatomeen - Eine Monographie der weltweit bekannten Taxa. Teil 1. Allgemeines und Encyonema Part. Bibliotheca Diatomologica, Vol. 36, J. Cramer, Berlin. 382 pp | Morphology; Taxonomy; Description; Type Illustration; Illustrations; Ecology |
Similar Species
Similar species not published on this website:
This page should be cited as:
Jüttner I. Encyonema brevicapitatum Krammer; 1997; 100,101. 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 https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=3041. [Accessed:
].
Image Gallery
Record last modified: 27/12/2020