Images
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LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 20-26µm |
| Width: | 4-5µm |
| Striae: | 16-20 striae in 10µm |
Description:
Valves narrow linear-lanceolate with rostrate to subcapitate and even capitate ends (L 20-26µm, W 4-5µm, 16-20 striae in 10µm). Axial area linear, very narrow. Central area variable due to irregularly shortened and spaced transapical striae. Raphe straight, filiform with distinct central pores, close together. Transapical striae strongly radiate to convergent near the poles.
| Morphology: | Naviculoid |
|---|---|
| Distribution: |
Autecology:
Notes:
Rare in water and moss samples, more frequently recorded from dry, almost circumneutral soils with low specific conductance values and fairly high nutrient and chloride concentrations.Kerguelen (Bourrelly & Manguin 1954, Larson 1974, Le Cohu & Maillard 1986, Van de Vijver et al. 1998a, 2001), South Orkney Islands (Oppenheim & Greenwood 1990, Jones et al. 1993).Described by Hustedt from the Kerguelen. Bears some similarities with N. longicephala Hustedt but differs by its larger shape and different raphe structure.
Other sites with Navicula bicephala
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Hustedt 1952 |
|---|---|
| Length: | |
| Width: | |
| Striae: |
Original Description:
New combination
| Author: |
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Citations
Index Nominum Algarum (INA):
- Original
- If an INA link is available, it will be shown above
- The INA is a bibliographic reference "card file" for algal taxonomy, containing nearly 200,000 names of algae (in the broad sense).
