Actinocyclus normanii (Gregory ex Greville) Hustedt ; 1957; 218
Synonymy
Coscinodiscus normanii Gregory ex Greville 1859
Key references
Morphology
Size
Diameter: 25-110 µm (Krammer & Lange-Bertalot 1991).
Shape
Valves circular, cells are barrel-shaped.
Valve
Central portion of one valve concave, the corresponding valve convex.
Striae
Radiating striae with large areolae, 10-13 in 10 µm (Krammer and Lange-Bertalot 1991).
Other features
Areolae on the mantle are much smaller than on the valve face.
A ring of widely and equally spaced rimoportulae (labiate processes) is present near the periphery of the valve face.
Diameter: 25-110 µm (Krammer & Lange-Bertalot 1991).
Shape
Valves circular, cells are barrel-shaped.
Valve
Central portion of one valve concave, the corresponding valve convex.
Striae
Radiating striae with large areolae, 10-13 in 10 µm (Krammer and Lange-Bertalot 1991).
Other features
Areolae on the mantle are much smaller than on the valve face.
A ring of widely and equally spaced rimoportulae (labiate processes) is present near the periphery of the valve face.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Greville R.K. 1859. Descriptions of new species of British Diatomaceae, chiefly observed by the late Professor Gregory. Quarterly Journal of Microscopical Science. 7: 79-86; pl. 6. | Morphology; Description; Taxonomy |
| Hustedt F. 1957. Die Diatomeenflora des Flußsystems der Weser im Gebiet der Hansestadt Bremen. Abhandlungen des Naturwissenschaftlichen Verein zu Bremen. 34(3): 181-440; 1 pl. | Morphology; Taxonomy; Illustrations; Ecology |
| Dijkman N.A., Kromkamp J.C. 2007. Photosynthetic characteristics of the phytoplankton in the Scheldt estuary: community and single-cell fluorescence measurements. European Journal of Phycology. 41(4): 425-434. | Biology |
This page should be cited as:
Mann D. G., Jüttner I. Actinocyclus normanii (Gregory ex Greville) Hustedt ; 1957; 218. In: Jüttner I., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M..
Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=4501. [Accessed:
].
Image Gallery
Record last modified: 27/12/2020