Images
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LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 12-25µm |
| Width: | 7-11µm |
| Striae: | 19-21 in 10µm |
Description:
Valves elliptical with broadly rounded ends. (L 12-25µm, W 7-11µm). RV: axial area very narrow, central area bordered by 5-9 short striae. Transapical striae very radiate (20-30 in 10µm), consisting of one row of areolae. Raphe straight, filiform. ARV: very narrow axial area, sometimes slightly lanceolate. No central area present. Transapical striae parallel in the middle, more curved towards the valve ends (19-21 in 10µm).
| Morphology: | Monoraphid |
|---|---|
| Distribution: |
Autecology:
Notes:
Quite rare on Ile de la Possession. Only found in low abundances in small, slightly alkaline pools and lakes and in relatively wet soils.Kerguelen (Le Cohu & Maillard 1983, Van de Vijver et al. 1998a, 2001)First described as member of the Cocconeis genus (Le Cohu & Maillard 1983). Lange-Bertalot & Krammer (1989) however concluded that the typical Cocconeis features can not be found on the SEM pictures. Structure looks much like A. oblongella. Based on the structure of the raphe system and the areolae, this species should be included within the genus Psammothidium.
Other sites with Psammothidium therezienii
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Le Cohu & Maillard 1983 |
|---|---|
| Length: | |
| Width: | |
| Striae: |
Original Description:
New combination
| Author: | Van de Vijver |
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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).
