LM scalebar = 10 µm = 40 pixels.
Observations
Contributor: Paula Furey - March 2012
Length Range: 42-180 µm
Width Range: 2.5-3.5 µm
Striae in 10 µm: 14-17 in the center, 16-22 at the ends
Description
Valves moderately arched. The ventral margin is concave, while the dorsal margin is convex. Valves become progressively narrower toward the apices. Helictoglossae are located close to the apices. The apices are slightly inflated and slightly recurved toward the dorsal margin. The distal raphe end curves on to the valve face, then bends 180º and continues a short distance toward the proximal raphe ends. This raphe curvature is visible in the LM. The areolae are unresolved in the LM. Aberrations may occur in the valves, often in the form of a protuberance or bump on the ventral margin.
Original Description
Basionym: Eunotia naegelii
Author: Migula 1907
Length Range: 40-75 µm
Striae in 10 µm: 17-19
Original Description
Original Images
Cite This Page:
Furey, P. (2012). Eunotia naegelii. In Diatoms of the United States. Retrieved June 19, 2013, from http://westerndiatoms.colorado.edu/taxa/species/eunotia_naegelii
Species: Eunotia naegelii
Contributor: Paula Furey
Reviewer: Marina Potapova
Image Credit: Paula Furey
- Valves moderately arched
- Valves narrow toward apices
- Apices slightly dorsally recurved
- Distal raphe end curves 180º
Valves moderately arched. Valves become progressively narrower toward the apices. The apices slightly recurved toward the dorsal margin. The distal raphe end curves on to the valve face, then bends 180º and continues a short distance towards the proximal raphe ends.
Compare
Eunotia naegelii is narrower and has a greater stria density than E. bilunaris and E. flexuosa.
Eunotia bilunaris
Ehrenberg
Eunotia flexuosa
(Brebisson in Kutzing) Kützing
Citations
Migula, W. (1907). Kryptogamen-Flora von Deutschland, Deutsch-Osterreich und der Schweiz im Anschluss an Thome’s Flora von Deutschland, Osterreich und der Schweiz. (Band VI, Kryptogamen-Flora), Band II, Algen, Teil 1, Cyanophyceae, Diatomaceae, Chlorophyceae. Friedrich von Zenzschwitz, Gera. pp. 1-918, 43 pls.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 33036