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Cleisthotecium containing ascospores of the fungus that causes powdery meldew on leaves and stems of some trees. Scale bar indicates 500 µm.Sample from ponds situated in the vicinity of Lake Constance (Bodensee, Southern Germany). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Midtsjælland, Danmark
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Mushroom Observer Image 949006: Phyllactinia guttata (Wallr.) Lev.
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Horbury, England, United Kingdom
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International Maize and Wheat Improvement Center
Flickr Group
Wheat leaves showing fungal growths due to powdery mildew (
Blumeria graminis). These are the first visible symptoms of the disease and consist of white to pale gray, fuzzy or powdery colonies of mycelia and conidia, on the upper surfaces of leaves and leaf sheaths (especially on lower leaves), and sometimes on the spikes. This superficial fungal material can be rubbed off easily with the fingers. Host tissue beneath the fungal material becomes chlorotic or necrotic and, with severe infections, the leaves may die.For more information, see CIMMYT's Wheat Doctor:
wheatdoctor.cimmyt.org/index.php?option=com_content&t....Photo credit: CIMMYT.
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Longitude (deg): -0.9. Latitude (deg): 51.4. Longitude (deg/min): 0° 60' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph and Teliomorph. Associated species: Calystegia silvatica. Identified by: Malcolm Storey. Comment: infection on leaves of Large Bindweed. Category: macro-photograph. Real world width(mm): 186.7876923077. Background: white background. Photographic equipment used: Specimen directly scanned on HP Scanjet 5470c flatbed scanner. For some photographs of some specimens (eg leaf mines) the transparency adaptor was used.
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Longitude (deg): -1.6. Latitude (deg): 51.1. Longitude (deg/min): 1° 40' W. Latitude (deg/min): 51° 10' N. Vice county name: South Wilts. Vice county no.: 8. Country: England. Stage: Fruitbody. Associated species: Acer pseudoplatanas. Identified by: Malcolm Storey. Comment: on leaves of Sycamore seedling. Category: microscope photograph. Image scaling: microscope low magnification. Photographic equipment used: Canon EOS1000D dSLR and Olympus BX53 microscope.
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Longitude (deg): -1.2. 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. Stage: Fruitbody. Associated species: Ribes uva-crispa. Identified by: Malcolm Storey. Photo summary: "Infection, cleistothecia and appendages". Comment: Cleistothecia on upper side of leaves of Gooseberry. Category: standard photograph or close-up. Photographic equipment used: Nikon D100 dSLR with Tamron SP T90 AF Macro 1:1 lens.
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Longitude (deg): -1.1. Latitude (deg): 51.5. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 30' N. Vice county name: Oxon. Vice county no.: 23. Country: England. Stage: Fruitbody. Associated species: Thesium humifusum. Identified by: Bruce Ing. Comment: on Bastard Toadflax. Category: macro-photograph. Real world width(mm): 102.0233333333. Photographic equipment used: Specimens directly scanned on Black Widow 9630 SP flatbed scanner.
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Longitude (deg): -1.1. Latitude (deg): 51.5. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 30' N. Vice county name: Oxon. Vice county no.: 23. Country: England. Stage: Fruitbody. Associated species: Euonymus europaeus. Identified by: Malcolm Storey. Comment: on Spindle leaves. Category: macro-photograph. Real world width(mm): 72.81333333333. Photographic equipment used: Specimens directly scanned on Black Widow 9630 SP flatbed scanner.
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Longitude (deg): -1.7. Latitude (deg): 50.8. Longitude (deg/min): 1° 50' W. Latitude (deg/min): 50° 50' N. Vice county name: South Hants. Vice county no.: 11. Country: England. Stage: Anamorph. Associated species: Euphorbia peplus. Identified by: Malcolm Storey. Comment: Conidial powdery mildew on Petty Spurge. Category: standard photograph or close-up. Background: white background. Where photo was taken: Arranged. Photographic equipment used: Canon EOS600D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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Longitude (deg): -1.2. Latitude (deg): 51.4. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 20' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph. Associated species: Valerianella carinata. Identified by: Malcolm Storey. Comment: "on Keeled-fruited Corn Salad, growing between pebbles in centre of driveway.". Category: standard photograph or close-up. Photographic equipment used: Nikon D100 dSLR with Tamron SP T90 AF Macro 1:1 lens.
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Longitude (deg): -1.5. Latitude (deg): 53.3. Longitude (deg/min): 1° 30' W. Latitude (deg/min): 53° 20' N. Vice county name: Derby. Vice county no.: 57. Country: England. Stage: Anamorph and Teliomorph. Associated species: Aesculus. Identified by: Malcolm Storey. Comment: mildew on horse chestnut. Category: microscope photograph. Image scaling: microscope low magnification. Photographic equipment used: Canon EOS10D dSLR and Meiji microscope with x2.5 projection eye-piece. DPI defaulting to 180.
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Longitude (deg): -2.7. Latitude (deg): 52.2. Longitude (deg/min): 2° 40' W. Latitude (deg/min): 52° 20' N. Vice county name: Shrops. Vice county no.: 40. Country: England. Stage: Teliomorph. Associated species: Corylus avellana. Identified by: Malcolm Storey. Comment: "hypophyllous cleistothecia, on Hazel leaves". Category: microscope photograph. Image scaling: highly enlarged. Photographic equipment used: Canon EOS1000D dSLR and Axioskop microscope with \"2.5\" projection eye-piece.
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Longitude (deg): -1.0. Latitude (deg): 51.4. Longitude (deg/min): 1° 0' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Fruitbody. Associated species: Fraxinus excelsior. Identified by: Malcolm Storey. Comment: on underside of ash leaves. Category: macro-photograph. Real world width(mm): 90.08533333333. Photographic equipment used: Specimens directly scanned on Black Widow 9630 SP flatbed scanner.
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Longitude (deg): -1.1. Latitude (deg): 51.5. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Infection. Associated species: Filipendula ulmaria. Identified by: Malcolm Storey. Comment: infection on Meadow Sweet inflorescence. Shows: Left inflorescence is heavily infected; right less so. Category: macro-photograph. Real world width(mm): 98.77777777778. Photographic equipment used: Specimens directly scanned on Black Widow 9630 SP flatbed scanner.
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Longitude (deg): -0.9. Latitude (deg): 51.5. Longitude (deg/min): 0° 60' W. Latitude (deg/min): 51° 30' N. Vice county name: Oxon. Vice county no.: 23. Country: England. Stage: Fruitbody. Associated species: Fagus sylvatica. Identified by: Malcolm Storey. Comment: hypophyllous on fallen Beech leaves. Category: macro-photograph. Image scaling: magnified. Photographic equipment used: Nikon D100 dSLR with Olympus OM Zuiko 50mm macro lens - mounted reversed on bellows.
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Longitude (deg): -2.0. Latitude (deg): 50.8. Longitude (deg/min): 2° 0' W. Latitude (deg/min): 50° 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Anamorph. Associated species: Dactylis glomerata. Identified by: Malcolm Storey. Comment: conidial state epiphyllous on living Cocksfoot leaves. Category: microscope photograph. Image scaling: microscope low magnification. Photographic equipment used: Canon EOS1000D dSLR and Axioskop microscope with \"2.5\" projection eye-piece.
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Longitude (deg): -1.9. Latitude (deg): 50.7. Longitude (deg/min): 1° 60' W. Latitude (deg/min): 50° 50' N. Vice county name: Dorset. Vice county no.: 9. Country: England. Stage: Teliomorph. Associated species: Heracleum sphondylium. Identified by: Malcolm Storey. Comment: Cleistothecia on Hogweed leaves. Category: macro-photograph. Image scaling: enlarged. Photographic equipment used: Canon EOS400D dSLR with Tamron SP AF Di 90mm Macro 1:1 lens.
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cleisthotecium open. Scale bar indicates 100 µm.Sample from ponds situated in the vicinity of Lake Constance (Bodensee, Southern Germany). The image was built up using several photomicrographic frames with manual stacking technique. Images were taken using Zeiss Universal with Olympus C7070 CCD camera.
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Midtsjælland, Danmark
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International Maize and Wheat Improvement Center
Flickr Group
Wheat leaf showing powdery mildew caused by Blumeria graminis. These fungal growths are initially white to pale gray, while older fungal tissue turns yellowish gray. They consist of fuzzy or powdery colonies of mycelia and conidia, on the upper surfaces of leaves and leaf sheaths (especially on lower leaves), and sometimes on the spikes. This superficial fungal material can be rubbed off easily with the fingers. Host tissue beneath the fungal material becomes chlorotic or necrotic and, with severe infections, the leaves may die.For more information, see CIMMYT's Wheat Doctor: <http://wheatdoctor.cimmyt.org/index.php?option=com_content&task=view&id=115&Itemid=43&lang=en.Photo credit: Thomas Lumpkin/CIMMYT.
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Longitude (deg): -0.9. Latitude (deg): 51.4. Longitude (deg/min): 0° 60' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Anamorph and Teliomorph. Associated species: Calystegia silvatica. Identified by: Malcolm Storey. Comment: infection on leaves of Large Bindweed. Category: macro-photograph. Real world width(mm): 109.0295. Background: white background. Photographic equipment used: Specimen directly scanned on HP Scanjet 5470c flatbed scanner. For some photographs of some specimens (eg leaf mines) the transparency adaptor was used.