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Observations
| Observations: | Sarah Spaulding and Rhea Esposito |
|---|---|
| Length: | 14-48 µm |
| Width: | 6-10 µm |
| Striae: | 15-17 in 10 µm at the center; 18-23 in 10 µm at the ends |
Description:
Heavily silicified; valves slightly triundulate; slightly to strongly gibbous in the middle; ends broadly rounded. Central area oval shaped. A narrow, rib-like, longitudinal canal is present. Striae strongly radiate in the middle portion of the valve; parallel or slightly convergent towards the apices. Raphe straight; proximal raphe ends hooked and extending past the first or second row of longitudinal striae; distal raphe endings deflected in a broad curve.
| Morphology: | Naviculoid |
|---|---|
| Distribution: | South Victorialand endemic |
Autecology:
Notes:
Muelleria meridionalis appears robust and heavily silicified compared to M. peraustralis. The central striae are prominent because of the relatively large transapical chambers within the valve. Muelleria meridionalis is presently known only from the type locality. It is found in association with M. peraustralis, in moist soils, streams, and benthis cyanobacterial mats of lakes. Soils and streams are exposed to hight light intesities, while benthic cyanobacteral mats are heavily shaded by lake ice-cover. Soils and streambeds are ?freeze-dried?; for all but a few weeks of the austral summer, and the temperature of liquid water, when present, is near 4°C.
McMurdo Dry Valleys Waterbodies with Muelleria meridionalis
- Adams Stream
- Aiken Creek
- Bohner Stream
- Bowles Creek
- Canada Glacier
- Canada Stream
- Commonwealth Glacier
- Commonwealth Stream
- Crescent Stream
- Delta Stream
- Green Creek
- Harnish Creek
- Harnish Creek Tributary
- Huey Creek
- Hughes Glacier Pond
- Lake Fryxell
- Lawson Creek
- Little Sharpe
- Lost Seal Stream
- McKay Creek
- Miers Stream
- Onyx River
- Priscu Stream
- Spaulding Pond
- Taylor Glacier
- Von Guerard Stream
- Wales Stream
- Wharton Creek
- Wormherder Creek
Original Type Description
| Author: | Spaulding & Stoermer 1997 |
|---|---|
| Length: | 14-48 µm |
| Width: | 8-10 µm |
| Striae: | 15-17 in 10 µm in the center, 18 µm at the distal ends |
Original Description:
Valve margin slightly to strongly gibbous in the middle, with an undulate margin between the central gibbous portion and ends on larger valves. Length 14-50 µm, width 8-10 µm, central striae 15-17 striae in 10 µm, distal striae 18-23 striae in 10 µm. Puncta rectangular to rectangular-elongate. Central striae prominent, strongly radiate. Striae convergent at valve ends. Proximal raphe ends hooked, extending into first or second row of longitudinal striae. Holotype: ANSP GC#65008. Isotypes: CAS#217001. Type locality: Lake Hoare, Taylor Valley, Antarctica.
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):
- Spaulding and Stoermer 1997. pg. 101, figs 12-14 [citation 111(96)]
- Spaulding et al. 1999. Phycologia 38:314-341. [citation 126(114)]
