Ramularia simplex Pass. 1882

Conidia - magnified
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Malcolm Storey BioImages, the virtual fieldguide, UK
Longitude (deg): -1.3. Latitude (deg): 51.6. Longitude (deg/min): 1° 20' W. Latitude (deg/min): 51° 40' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph. Associated species: Ranunculus repens. Identified by: Malcolm Storey. Comment: Infection on dark necrotic patches on leaves of Creeping Buttercup. Category: microscope photograph. Image scaling: magnified. Photographic equipment used: Canon EOS10D dSLR and Meiji microscope with x2.5 projection eye-piece. DPI defaulting to 180.
Infected leaf (with rust aecia) - top surface - close-up - black background
cc-by-nc-sa-3.0

Malcolm Storey BioImages, the virtual fieldguide, UK
Longitude (deg): -1.3. Latitude (deg): 51.6. Longitude (deg/min): 1° 20' W. Latitude (deg/min): 51° 40' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph. Associated species: Ranunculus repens. Identified by: Malcolm Storey. Comment: Infection on dark necrotic patches on leaves of Creeping Buttercup. Other taxa shown: The yellowish patches are rust (Puccinia magnusiana/Uromyces dactylidis). Category: standard photograph or close-up. Background: black background. Photographic equipment used: Canon EOS400D dSLR + Sigma 50mm 1:1 macro lens.
Infected leaf (with rust aecia) - under surface - close-up - black background
cc-by-nc-sa-3.0

Malcolm Storey BioImages, the virtual fieldguide, UK
Longitude (deg): -1.3. Latitude (deg): 51.6. Longitude (deg/min): 1° 20' W. Latitude (deg/min): 51° 40' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph. Associated species: Ranunculus repens. Identified by: Malcolm Storey. Comment: Infection on dark necrotic patches on leaves of Creeping Buttercup. Other taxa shown: The yellowish patches are rust (Puccinia magnusiana/Uromyces dactylidis). Category: standard photograph or close-up. Background: black background. Photographic equipment used: Canon EOS400D dSLR + Sigma 50mm 1:1 macro lens.
Conidia - magnified
cc-by-nc-sa-3.0

Malcolm Storey BioImages, the virtual fieldguide, UK
Longitude (deg): -1.3. Latitude (deg): 51.6. Longitude (deg/min): 1° 20' W. Latitude (deg/min): 51° 40' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph. Associated species: Ranunculus repens. Identified by: Malcolm Storey. Comment: Infection on dark necrotic patches on leaves of Creeping Buttercup. Category: microscope photograph. Image scaling: magnified. Photographic equipment used: Canon EOS10D dSLR and Meiji microscope with x2.5 projection eye-piece. DPI defaulting to 180.