Images
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LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 20-28µm |
| Width: | 5-6µm |
| Striae: | 17-19 striae in 10µm |
Description:
Valves elliptical-lanceolate with highly variable rostrate to subcapitate ends (L 20-28µm, W 5-6µm, 17-19 striae in 10µm). Axial area very narrow, linear with an asymmetrically thickened nodule. Central area transapically widened, asymmetrical. Raphe filiform. Central endings with distinct pores, slightly deflected to the primary side. Transapical striae weakly radiate, convergent towards the poles. Lineolae distinct, even in LM.
| Morphology: | Naviculoid |
|---|---|
| Distribution: |
Autecology:
Notes:
Common in some moss and water samples. Prefers wet mosses (mean F-value 4.1±0.9). In water samples, most records come from small pools and rivers with alkaline pH values and higher nutrient conditions. Less common in soil samples (only minor abundances).Widespread in the entire (Sub-)Antarctic Region.
Other sites with Navicula gregaria
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Donkin 1861 |
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| Length: | |
| Width: | |
| Striae: |
Original Description:
New combination
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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).
