Longitude (deg): -1.1. Latitude (deg): 51.4. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Associated species: Azolla filiculoides. Identified by: Malcolm Storey. Comment: in hollow inside leaf of Water Fern. Category: microscope photograph. Real world width(mm): 0. Photographic equipment used: Pixera Pro tethered low-resolution digital camera with Meiji microscope using CS adaptor and x.7 projection eye-piece.