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SEM image scalebar = 1 µm
Observations
| Observations: | Sarah Spaulding and Rhea Esposito |
|---|---|
| Length: | 19-32 µm |
| Width: | 4-5 µm |
| Striae: | 4-5 µm |
Description:
Valve elliptical-lanceolate with sub-capitate ends. Narrow central area with the two middle striae "fainter" than the other striae. Axial area present, widening towards the central portion of the valve. Raphe straight and simple with slightly hooked terminal raphe endings. Striae slightly radiate in the center to slightly convergent at the ends.
| Morphology: | Naviculoid |
|---|---|
| Distribution: | South Victorialand endemic |
Autecology:
Notes:
This species was originally described as Navicula (Pinnularia) shackletoni by West and West (1911). VanLandingham (1975) claims that Mills (1934) transferred it to Pinnularia. However, Mills (1934) appears to have identified this species as both Navicula and Pinnularia, and no clear species transfer was made. West and West (1911) also described a separate variety, N. shackletoni var. pelucida, which is distinguished by having the middle two striae "reduced" instead of "faint." However, no such valves were encountered in this study.
McMurdo Dry Valleys Waterbodies with Navicula shackletoni
- Adams Stream
- Aiken Creek
- Blue Lake
- Bohner Stream
- Bowles Creek
- Canada Stream
- Clear Lake
- Coast Lake
- Commonwealth Stream
- Crescent Stream
- Delta Stream
- Green Creek
- Green Lake
- Harnish Creek
- Harnish Creek Tributary
- Huey Creek
- Lake Fryxell
- Lost Seal Stream
- Lyons Tributary (Mason?)
- Many Glaciers Pond
- McKay Creek
- McMurdo Hut Ridge
- Miers Stream
- Onyx River
- Parera Pond
- Picture Pond
- Pond by Blue Lake
- Pond by Clear Lake
- Pond North of Rookery
- Pond South of Nussbaum Riegel
- Pony Lake
- Priscu Stream
- Spaulding Pond
- Von Guerard Stream
- Wales Stream
- Wharton Creek
Original Type Description
| Author: | West and West 1911 |
|---|---|
| Length: | 25-29 µm |
| Width: | 4-5 µm |
| Striae: | 10-12 in 10 µm |
Original Description:
N. minuta, valvis anguste elliptico-lanceolatis cum polis valde productis levissime subcapitatis et obtusis, platea centrali minuta, platea axiali angustissima, striis 10-12 in 10 µm, leviter radiatis, validis et non punctulatis, in medio striis duobus utrobique adversus plateam centralem delicatissimis et valde indistinctis. Cellula in aspectu cingulato anguste lineari-oblonga.
New combination
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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):
- West and West 1911. p. 286, pl. 26, figs 136-138. [citation 124(106)]
- Kellogg et al. 1980. p. 184-85, pl. 1, fig. 7-8. [citation 64(32)]
