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LM image scalebar = 10 µm = 38 pixels
SEM image scalebar = 10 µm
Observations
| Observations: | Sarah Spaulding and Rhea Esposito |
|---|---|
| Length: | 45-114.5 µm |
| Width: | 8-11 µm |
| Striae: | 19-20.5 per 10 micrometers at the center; 20.5-23 per 10 micrometers at the ends |
Description:
Valves linear-lanceolate, narrowing towards the produced endings; dorsal margin parallel to slightly convex; ventral margin slightly concave. Raphe eccentric, stretching along the valve margin and biarcuate (closer to the ventral margin centrally than near the poles). Striae parallel throughout; more widely spaced at the center of the valve. Fibulae (keel puncta) variable in size and spacing. This diatom is similar to Hantzschia sp. #1, but is wider, has less capitate endings, and has a less convex valve mantle. Ko-Bayashi (1965) illustrates a similar species which he calls Hantzschia amphioxys var. recta. However, the original description of var. recta has a size range of 20-49 micrometers, while Ko-Bayashi's specimens had a length of 60-120 micrometers. Although Ko-Bayashi's specimens have straighter margins than ours, we feel his identification was inaccurate. Instead, it appears that Ko-Bayashi's specimens are more closely related to our own, which we feel is a new species of Hantzschia.
| Morphology: | Nitzschioid |
|---|---|
| Distribution: | South Victorialand endemic |
Autecology:
Notes:
McMurdo Dry Valleys Waterbodies with Hantzschia hyperaustralis
- Adams Stream
- Aiken Creek
- Bohner Stream
- Bowles Creek
- Canada Stream
- Commonwealth Stream
- Crescent Stream
- Delta Stream
- Green Creek
- Harnish Creek Tributary
- Huey Creek
- Hughes Glacier Pond
- Lost Seal Stream
- Many Glaciers Pond
- Miers Stream
- Onyx River
- Picture Pond
- Priscu Stream
- Spaulding Pond
- Upland Pond
- Von Guerard Stream
- Wales Stream
- Wharton Creek
- Wormherder Creek
Original Type Description
| Author: | Van de Vijver & Zidarova 2010 |
|---|---|
| Length: | 50-80 µm |
| Width: | 7-9 µm |
| Striae: | 14-16 µm |
Original Description:
New combination
| Author: |
|---|
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):
- Ko-Bayashi 1965. p. 13-16, pl. 15-18. [citation 69(40)]
