Images
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LM image scalebar = 10 µm = 38 pixels
SEM image scalebar = 10 µm
Observations
| Observations: | Sarah Spaulding and Rhea Esposito |
|---|---|
| Length: | 22-43 µm |
| Width: | 7.5-10 µm |
| Striae: | 16-18 in 10 µm |
Description:
Valves linear-lanceolate with slightly rostrate ends. Valve length 22-43 µm, width 7.5-10 µm. Axial area narrowly lanceolate. Central area rectangular or elongate-elliptical and asymmetrical to the apical axis. A solitary stigma is present on the narrower side of the central area. Central nodule is distinctly thickened. Raphe linear; both proximal and distal raphe ends hook slightly in the opposite direction of the stigma. Striae are composed of punctate areolae and number 16-18 in 10 µm. Striae radiate throughout and are more broadly spaced in the central part of the valve. Valve mantle is shallow. SEM: Externally, striae terminate before the distal valve margin forming a distinct hyaline area. Distal raphe terminates in a narrow hyaline band. Stigma opens as a simple external pore. Internally, striae lack distinct openings and are transapically elongate. Stigma opening a curved and lipped slit.
| Morphology: | Naviculoid |
|---|---|
| Distribution: | South Victorialand endemic |
Autecology:
Notes:
This taxon is most similar to the taxa L. murrayi West and West (Mann) non sensu Hustedt. L. murrayi has coarser striae (14 in 10 µm, as compared to 16-18 in µm) and the ends are more narrowly rostrate than L. murrayi. Ko-Bayashi (1963) examined the range of morphological variation in Luticola muticopsis (van Heurck) Mann and Navicula muticopsis f. murrayi (West et West) Ko-Bayashi. His numerous images show specimens with more expanded central margins and distinctly capitate ends (Ko-Bayashi 1963).
McMurdo Dry Valleys Waterbodies with Luticola laeta
- 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
- Lake Fryxell
- Lawson Creek
- Little Sharpe
- Lost Seal Stream
- Miers Stream
- Onyx River
- Priscu Stream
- Von Guerard Stream
- Wales Stream
- Wharton Creek
- Wormherder Creek
Original Type Description
| Author: | Spaulding & Esposito 2008 |
|---|---|
| Length: | 22-43 µm |
| Width: | 7.5-10 µm |
| Striae: | 16-18 in 10 µm |
Original Description:
Valvae lineari-lanceolatae, apicibus leviter rostratis, 22-43 µm longae, 7.5-10 µm latae. Area axialis anguste lanceolata. Area centralis oblonga vel elongate-elliptica et asymmetrica axe. Stigma solitarium angustiori lateri areae centralis adest. Nodulus centralis crassus. Margo centralis gibbus stigmati opposito. Raphe linearis fissuris terminalibus et extremis centralibus stigmati opposite curvatis Striae punctatarum areolarum, 16-18 per 10 µm. Striae radiatae passim et dispositae late in media valvae. Limbus angustus.
New combination
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Citations
Index Nominum Algarum (INA):
- 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. 285, pl. 26, fig. 129. [citation 124(102)]
- Ko-Bayashi 1963. p. 8-12, pl. 4-9. [citation 68(39)]
- Esposito et al. 2008 [citation 137(132)]
