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LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 18-27µm |
| Width: | 4,5-6µm |
| Striae: | 16-18 striae in 10µm |
Description:
Valves elliptical-lanceolate to broadly lanceolate in smaller individuals with bluntly rounded, not protracted ends (L 18-27, W 4,5-6µm, 16-18 striae in 10µm). Axial area very narrow, linear. Raphe filiform, straight with distinct central pores, close together. Central area transversely radial, asymmetrical due to irregularly shortened bordering striae. Transapical striae equally spaced, strongly radiate in the middle, convergent towards the poles. Lineolae distinctly visible in LM, 35 in 10µm.
| Morphology: | Naviculoid |
|---|---|
| Distribution: |
Autecology:
Notes:
Vallée de la Hébé, Ile de la Possession, Crozet Archipelago, Sample BA078 (coll. date 29/11/1999).So far only found in one soil sample taken from a steep hill next to the sea. Measured pH was 5,6 while the specific conductance value was rather high (1953µS/cm) and both phosphate (3,44mg/l) and ammonium (1,68mg/l) levels were also elevated.Only found on Ile de la Possession.
Other sites with Navicula venetiformis
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Van de Vijver & Beyens |
|---|---|
| Length: | 18-27µm |
| Width: | 4,5-6µm |
| Striae: | 16-18 striae in 10µm |
Original Description:
Valves elliptical-lanceolate to broadly lanceolate in smaller individuals with bluntly rounded, not protracted ends (L 18-27, W 4,5-6µm, 16-18 striae in 10µm). Axial area very narrow, linear. Raphe filiform, straight with distinct central pores, close together. Central area transversely radial, asymmetrical due to irregularly shortened bordering striae. Transapical striae equally spaced, strongly radiate in the middle, convergent towards the poles. Lineolae distinctly visible in LM, 35 in 10µm.
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).
