Images
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LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 5-11µm |
| Width: | 3-9µm |
| Striae: | 17-20 radiate striae in 10µm |
Description:
Valves elliptical with rounded ends (L 5-11µm, W 3-9µm, 17-20 radiate striae in 10µm, consisting of 3-4 transapical rows of areolae.) RV: axial area narrow, raphe filiform with terminal fissures bending towards the same valve margin. In LM, the central area appears circular. Internally with thickened costae. ARV: narrow linear sternum present.
| Morphology: | Monoraphid |
|---|---|
| Distribution: |
Autecology:
Notes:
P. quadripunctatum is commonly found in the area around Lapérouse where it dominated sometimes the diatom flora, especially in wet mosses (F-value between IV and V). Also present in alkaline lakes with higher specific conductance values (up to 1500µS/cm) and slightly acid, semi-wet soils (±45%).South Orkney Islands (Oppenheim 1994), South Georgia (Van de Vijver & Beyens 1996).
Other sites with Planothidium quadripunctatum
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Oppenheim |
|---|---|
| Length: | |
| Width: | |
| Striae: |
Original Description:
New combination
| Author: | Sabbe 1994 |
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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).
