Actinoptychus splendens (Shadbolt) Ralfs 1861
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Light microscopy identification notes
Valve View: Circular shape with 10-22 alternating raised and lowered segments. Each raised segment has a hyaline line from the centre to the margin and ends with a marginal labiate process. Two layers to the valves - 1 has large hexagonal areolae, the other smaller and finer areolae. Central area is circular or stellate (star-shaped) and non-areolated.
Girdle View: A wavy outline. The height (pervalvar axis) of the cell smaller than the diameter.
| Diameter (um) | Pervalvar axis (height) (um) | Areolae per 10 um | No. of segments |
|---|---|---|---|
| 65-180 | 9 | 12-22 |
References
‘Actinoptychus splendens' (2008) Plankton net. Available at: https://planktonnet.awi.de/index.php?contenttype=image_details&itemid=58995#content (Accessed: 30 November 2023).
Guiry, M.D. & Guiry, G.M. (2023) AlgaeBase. Available at: https://www.algaebase.org/search/species/detail/?species_id=31610 (Accessed: 30 November 2023).
Lee, J-H. and Chang, M. (1996) 'Morphological Variations of the Marine Diatom Genus Actinoptychus in the Coastal Waters of Korea', ALGAE, 4(11), pp. 365. Available at: https://koreascience.kr/article/JAKO199610102452157.page (Accessed: 30 November 2023).
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References
Guiry, M.D. & Guiry, G.M. (2023) AlgaeBase. Available at: https://www.algaebase.org/search/species/detail/?species_id=37268 (Accessed: 30 November 2023).