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Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 12-20µm |
| Width: | 3,5-5µm |
| Striae: | 24-27 striae in 10µm |
Description:
Valves lanceolate to elliptical-lanceolate in smaller valves with broadly rounded, sometimes slightly subcapitate ends (L 12-20µm, W 3,5-5µm, 24-27 striae in 10µm). Axial area narrow, linear. Central area transapically enlarged, bordered by 3-4 slightly shortened striae. Raphe filiform, curved with clearly deflected central pores and hooked terminal fissures. Transapical striae in the middle strongly radiate (even sinusoidal) to moderately radiate towards the ends.
| Morphology: | Naviculoid |
|---|---|
| Distribution: |
Autecology:
Notes:
Crique de Noël, Ile de la Possession, Crozet Archipelago, Sample BW079 (coll. date 12/12/1997).Found in several samples from larger lakes. Fairly common in relatively dry soils (40-50%) with low nutrient conditions.So far only found on Ile de la Possession.This taxon clearly presents all features of the genus Sellaphora. Conspecificity with S. subantarctica (see above) is unlikely due to the different valve outline (more tumid in the middle), the clearly curved raphe and the different striation pattern, especially near the central area.
Other sites with Sellaphora tumida
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Van de Vijver & Beyens |
|---|---|
| Length: | 12-20µm |
| Width: | 3,5-5µm |
| Striae: | 24-27 striae in 10µm |
Original Description:
Valves lanceolate to elliptical-lanceolate in smaller valves with broadly rounded, sometimes slightly subcapitate ends (L 12-20µm, W 3,5-5µm, 24-27 striae in 10µm). Axial area narrow, linear. Central area transapically enlarged, bordered by 3-4 slightly shortened striae. Raphe filiform, curved with clearly deflected central pores and hooked terminal fissures. Transapical striae in the middle strongly radiate (even sinusoidal) to moderately radiate towards the ends.
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).
