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LM image scalebar = 10 µm = 72 pixels
SEM image scalebar = 5 µm
Observations
| Observations: | Sarah Spaulding and Rhea Esposito |
|---|---|
| Length: | 12-37 µm |
| Width: | 5-9 µm |
| Striae: | 15-18 in 10 µm |
Description:
Valves sub-elliptical, with lateral margins extended or subparallel; endings rostrate to slightly capitate. Axial area present, widening towards the central region of the valve. Central area typically elliptical or oval shaped but occasionally stauroform; usually with a single row of poroids around the outer edge. A solitary stigma present in the central area. Raphe straight; median raphe and terminal raphe endings slightly hooked in the opposite direction of the stigma. Striae radiate throughout, consisting of 3-5 distinct puncta except in the median portion of the valve and at the poles.
| Morphology: | Naviculoid |
|---|---|
| Distribution: | Antarctic endemic |
Autecology:
Notes:
Striae density was originally described as 13-14 in 10 µm by Van Huerck (1909) and subsequently by Baker (1967) and Kellogg et al. (1980). However, we observed striae counts (15-18 in 10 µm) that agree more closely with those of Ko-Bayashi (1965) and Krammer and Lange-Bertalot (1986). In the past, there has been much discussion concerning the validity of the forms (capitata, evoluta, and reducta) of this genus (Ko-Bayashi, 1965; Hustedt, 1966; Kellogg et al. 1980). However, most specimens examined had an elliptical or rounded central area, while the other forms of this species (capitata, evoluta, and reducta) always had an acute-angled sub-fascia. Thus, this attribute appears to be a valid character for further separating this species from its forms.
McMurdo Dry Valleys Waterbodies with Luticola muticopsis
- Adams Stream
- Aiken Creek
- Bohner Stream
- Bowles Creek
- Canada Glacier
- Canada Stream
- Coast Lake
- Commonwealth Glacier
- Commonwealth Stream
- Crescent Stream
- Delta Stream
- Garwood Stream
- Green Creek
- Green Lake
- Harnish Creek
- Harnish Creek Tributary
- Hughes Glacier Pond
- Lawson Creek
- Little Sharpe
- Lost Seal Stream
- Lyons Tributary (Mason?)
- McKay Creek
- Miers Stream
- Onyx River
- Pond by Clear Lake
- Pond North of Rookery
- Pony Lake
- Priscu Stream
- Von Guerard Stream
- Wales Stream
- Wharton Creek
- Wormherder Creek
Original Type Description
| Author: | Van Heurck 1909 |
|---|---|
| Length: | |
| Width: | |
| Striae: |
Original Description:
Valve elliptique, a extrémités brusqement et longuement rétrécies-rostrées, subparalleles, tronquées. Striae radiantes au nombre do 10 in 1 c.d.m., formées de gros granules laissant un large blanc stauronéiforme pres du nodule median et montant un gors point isolé, unilateral au milieu de ce pseudo-stauros. Nodules terminaux petits, semblant prolongés de chaque coté en hamecon, detail qui a été omis dans le dessin et n’est apparent que dans und autre mise au point. Longeur: 2 c.d..m., Largeur: 1 c.d.m.
New combination
| Author: | Mann, D.G. 1990 |
|---|
Citations
Index Nominum Algarum (INA):
- Original
- New Combination
- 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):
- Van Huerck 1909. p. 12, taf. 2, fig. 181. [citation 99(81)]
- Ko-Bayashi 1965. p. 24-34, pl.26-31 [citation 69(42)]
- Kellogg et al. 1980. p. 182-83, pl. 1, fig. 10. [citation 64(28)]
- Mann 1990. In Round et al., The Diatoms, pg. 671. [citation 104(85)]
- Van de Vijver and Mataloni 2008 [citation 138(131)]
