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Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 50-75µm |
| Width: | 15-20µm |
| Striae: | 4-5 striae in 10µm |
Description:
Valves elliptic with obtusely, cuneately rounded ends (L 50-75µm, W 15-20µm, 4-5 striae in 10µm). Axial area fairly broad, 1/2 of valve width, lanceolate. Central area asymmetrically expanded, rounded. Raphe clearly lateral with straight inner raphe fissure and curved outer raphe fissure. Central raphe pores drop-like. Terminal fissures sickle-shaped. Striae very broad, radiate.
| Morphology: | Naviculoid |
|---|---|
| Distribution: |
Autecology:
Notes:
Vallée du Camp, Ile de la Possession, Crozet Archipelago, Sample BA208 (coll. date 21/02/2002).Found once in a dry (mean moisture value 10%) soil of a cavern next to the base, characterized by low nutrient conditions, a circumneutral pH and relatively high salinity levels.So far only known from Ile de la Possession.P. alpiniformis shows some resemblance to P. alpina W. Smith and P. splendida Hustedt. Compared to P. alpina, the taxon is much smaller with a higher number of striae in 10µm. It might be considered as a 'very small P. alpina'. P. splendida has a different axial area. The irregular structures on the valve face are absent.
Other sites with Pinnularia alpiniformis
- Ile de la Possession (moist habitats), Crozet Archipelago
Original Type Description
| Author: | Van de Vijver & Beyens |
|---|---|
| Length: | 50-75µm |
| Width: | 15-20µm |
| Striae: | 4-5 striae in 10µm |
Original Description:
Valves elliptic with obtusely, cuneately rounded ends (L 50-75µm, W 15-20µm, 4-5 striae in 10µm). Axial area fairly broad, 1/2 of valve width, lanceolate. Central area asymmetrically expanded, rounded. Raphe clearly lateral with straight inner raphe fissure and curved outer raphe fissure. Central raphe pores drop-like. Terminal fissures sickle-shaped. Striae very broad, radiate.
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).
