Nupela fennica
(Hustedt) Lange-Bertalot 2004 Category: Symmetrical biraphid
BASIONYM: Navicula fennica Hustedt 1962
LM scalebar = 10 µm = 80 pixels.
Observations
Contributor: Marina Potapova - May 2010
Length Range: 9-18 µm
Width Range: 2.7-3.5 µm
Striae in 10 µm: 35-40
Description
Valves are linear-elliptical with subrostrate or rounded ends. Axial area is narrowly linear. Central area is rectangular fascia. Striae are radiate in the middle, parallel or slightly convergent at apices, 35-40 in 10 mm. Raphe is filiform, straight or very slightly curved, with slightly expanded external proximal endings.
Original Description
Basionym: Navicula fennica
Author: Hustedt 1962
Length Range: 14 µm
Width Range: 3 µm
Striae in 10 µm: 40
Original Description
Frustula delicata. Valvae lineari-lanceolatae marginibus subconvexis, apicibus obstuse rotundatis vix protractis, circiter 14 µ longae, 4 µ latae. Rhape directa filiformis. Area axialis angustissima linearis, area centralis fascian latam marginem fere attengentem formans. Structura delicatissima, striae transaicales subradiantes, circiter 40 in 10 µ.
Original Images
Cite This Page:
Potapova, M. (2010). Nupela fennica. In Diatoms of the United States. Retrieved May 20, 2013, from http://westerndiatoms.colorado.edu/taxa/species/nupela_fennica
Species: Nupela fennica
Contributor: Marina Potapova
Reviewer: Sarah Spaulding
Image Credit: Marina Potapova
- Valves linear-elliptical
- Central area rectangular fascia
- Striae 35-40 in 10 μm
Valves are linear-elliptical with subrostrate ends. Axial area is narrowly linear. Central area is rectangular fascia. Striae are radiate in the middle, parallel or slightly convergent at apices, 35-40 in 10 mm.
Compare
Nupela fennica differs from N. vitiosa by the shape of central area, which is symmetrical, rectangular, and expanded to both valve margins.
Nupela vitiosa
Citations
Hustedt, F. (1962). Die Kieselalgen Deutschlands, Österreichs und der Schweiz unter Berücksichtigung der übrigen Länder Europas sowie der angrenzenden Meeresgebiete. L. Rabenhorst (ed.), Kryptogamen Flora von Deutschland, Österreich und der Schweiz. Akademische Verlagsgesellschaft m.b.h. Leipzig 7(Teil 3, Lief. 2):161-348.
Krammer, K. and Lange-Bertalot, H. (2004). Bacillariophyceae 4. Teil: Achnanthaceae, Kritische Erganzungen zu Navicula (Lineolatae), Gomphonema Gesamtliteraturverzeichnis Teil 1-4 [second revised edition]. In: H. Ettl et al., Suesswasserflora von Mitteleuropa. Spektrum Akademischer Verlad Heidelberg, 468 pp.
Links & ID's
Index Nominum Algarum (INA)
California Academy of Sciences (CAS)
North American Diatom Ecological Database (NADED)
NADED ID: 92020