Euastrum elegans Ralfs 1848

Longitude (deg): -0.7. Latitude (deg): 51.1. Longitude (deg/min): 0° 40' W. Latitude (deg/min): 51° 10' N. Vice county name: Surrey. Vice county no.: 17. Country: England. Identified by: Malcolm Storey. Comment: in 1.5cm diam lump of brown jelly from isolated pool. Category: microscope photograph. Image scaling: magnified. Photographic equipment used: "35mm transparencies (on a variety of films, but Agfa CT18 in the 1960's to early 1980's followed by Fujichrome in the late 1980's.) Transparencies scanned with Minolta Dimage Scan Dual II AF-2820U transparency scanner.".

Description: The cells are (1.3)–1.4–1.6–(1.7) times longer than wide, broadly elliptical in shape. The lateral line of the shape showes soft ripples with horny ends. Cells are lightly tapered towards the rounded periphery with fine cuts in the middle and denticles on both sides. The incision in the middle of the cell (called sinus) runs deep and is straight-lined. At each center of the cell halves lies a thin swelling with a pattern of oblonged verrucae. Further nipples spread over the cell wall. Chloroplasts with few tiny pyrenoids.Dimension: Length (23)–27–40 µm, width (14)–17–22–(26) µm.Occurrence: Widely spread in acidic and middle acidic waters, in alpine regions up to altitude of 2000 m.Left: Original graphic by Prof. Lenzenweger.Right: Photomicrograph by Prof. Lenzenweger. For microphotography, the microscope illumination was adjusted in such a way that as many features as possible that are important for species identification are prominently displayed.Copyright by Prof. Rupert Lenzenweger, Ried im Innkreis, Austria.© Wolfgang Bettighofer,images under Creative Commons License V 3.0 (CC BY-NC-SA).For permission to use of (high resolution) images please contact postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page

Description: The cells are (1.3)–1.4–1.6–(1.7) times longer than wide, broadly elliptical in shape. The lateral line of the shape showes soft ripples with horny ends. Cells are lightly tapered towards the rounded periphery with fine cuts in the middle and denticles on both sides. The incision in the middle of the cell (called sinus) runs deep and is straight-lined. At each center of the cell halves lies a thin swelling with a pattern of oblonged verrucae. Further nipples spread over the cell wall. Chloroplasts with few tiny pyrenoids.Dimension: Length (23)–27–40 µm, width (14)–17–22–(26) µm.Occurrence: Widely spread in acidic and middle acidic waters, in alpine regions up to altitude of 2000 m.Left: Original graphic by Prof. Lenzenweger.Right: Photomicrograph by Prof. Lenzenweger. For microphotography, the microscope illumination was adjusted in such a way that as many features as possible that are important for species identification are prominently displayed.Copyright by Prof. Rupert Lenzenweger, Ried im Innkreis, Austria.© Wolfgang Bettighofer,images under Creative Commons License V 3.0 (CC BY-NC-SA).For permission to use of (high resolution) images please contact postmaster@protisten.de.For further information about the image, please click here: Link to protisten.de page