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LM image scalebar = 10 µm = 72 pixels
SEM image scalebar = 1 µm
Observations
| Observations: | Bart Van de Vijver |
|---|---|
| Length: | 20-28µm |
| Width: | 5-6µm |
| Striae: | 17-19 striae in 10µm |
Description:
Valves elliptical-lanceolate with highly variable rostrate to subcapitate ends (L 20-28µm, W 5-6µm, 17-19 striae in 10µm). Axial area very narrow, linear with an asymmetrically thickened nodule. Central area transapically widened, asymmetrical. Raphe filiform. Central endings with distinct pores, slightly deflected to the primary side. Transapical striae weakly radiate, convergent towards the poles. Lineolae distinct, even in LM.
| Morphology: | Naviculoid |
|---|---|
| Distribution: | South Victorialand endemic |
Autecology:
Notes:
Common in some moss and water samples. Prefers wet mosses (mean F-value 4.1±0.9). In water samples, most records come from small pools and rivers with alkaline pH values and higher nutrient conditions. Less common in soil samples (only minor abundances).Widespread in the entire (Sub-)Antarctic Region.
McMurdo Dry Valleys Waterbodies with Navicula gregaria
- Aiken Creek
- Bowles Creek
- Canada Stream
- Commonwealth Glacier
- Commonwealth Stream
- Green Creek
- Harnish Creek Tributary
- Huey Creek
- Lake Fryxell
- Lost Seal Stream
- McKay Creek
- Miers Stream
- Onyx River
- Von Guerard Stream
Original Type Description
| Author: | Donkin 1861 |
|---|---|
| Length: | |
| Width: | |
| Striae: |
Original Description:
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).
Publications (by year):
- Donkin 1861. Quart. J. Micr. Sc., ser. 2, 1:10, pl. I, fig. 9. [citation 32(10)]
- Krammer and Lange-Bertalot 1986. p. 116-117, taf. 38, figs 10-15. [citation 74(52)]
- Lange-Bertalot 1993. p. 116-17, taf. 48, figs 12-18. [citation 82(69)]
