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LM image scalebar = 10 µm = pixels not measured
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 10-20µm |
| Width: | 5-8µm |
| Striae: | 25-30 striae in 10µm |
Description:
Valves elliptical (L 10-20µm, W 5-8µm). RV: 25-30 striae (one row of areolae) in 10µm radiate in the middle to very radiate at the end. Axial area very narrow, central area stauroform, bordered by several shorter striae. Raphe filiform with clearly marked central pores. ARV: axial area linear, narrow. 10-14 striae in 10µm, in the middle parallel, at the ends rather radiate. Areolae mostly starting in two rows at the valve margin, ending in one row at the axial area. Very short striae are placed between the longer ones.
| Morphology: | Monoraphid |
|---|---|
| Distribution: |
Autecology:
Notes:
Common in slightly acid, oligotrophic pools and lakes with moderate specific conductance values (up to 675µS/cm). In mosses much rarer, showing no moisture preference (F-value ranging from III to VI). Observations in soils are scarce.Kerguelen (Le Cohu & Maillard 1983 : A. saxonica Krasske, Van de Vijver et al. 1998a, 2001), South Georgia (Van de Vijver & Beyens 1996), Maritime Antarctic Region (Van de Vijver & Beyens 1997b).The structure of the raphe (externally and internally), together with the form of the poroids of the RV justify a transfer to the genus Psammothidium.
Other sites with Psammothidium oblongellum
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Oestrup 1902 |
|---|---|
| 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).
