Images
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LM image scalebar = 10 µm = 72 pixels
SEM image scalebar = 5 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:
Luticola laeta is most similar to the taxon L. murrayi West and West (Mann) non sensu Hustedt. Luticola murrayi has coarser striae (14 in 10 µm, as compared to 16-18 in 10 µm in L. laeta) 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 dolia
- Adams Stream
- Aiken Creek
- Bohner Stream
- Bowles Creek
- Canada Stream
- Clear Lake
- Commonwealth Glacier
- Commonwealth Stream
- Crescent Stream
- Delta Stream
- Garwood Stream
- Green Creek
- Harnish Creek
- Harnish Creek Tributary
- Huey Creek
- Lawson Creek
- Little Sharpe
- Lost Seal Stream
- 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: | Spaulding & Esposito 2008 |
|---|---|
| Length: | 15-22 µm |
| Width: | 5.5-8 µm |
| Striae: | 14-18 in 10 µm |
Original Description:
Valvae lati-rotundatae, apicibus capitatis vel rostratis quoad specimina minora, 15-22 µm longae, 5.5-8 µm latae. Area axialis lanceolata. Area centralis oblonga vel elongate-elliptica et ostendens solum ordinem striarum in margine valvae. Stigma solitarium area centrali dispositum. Nodulus centralis crassus. Raphe linearis; fissuris terminalibus et extremis centralibus stigmati opposite curvatis. Striae punctatarum areolarum, 14-18 per 10 µm. Striae radiatae passim. 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).
