RM2JW3HKY–Ash dieback disease signs in ash trees (Fraxinus excelsior), caused by Hymenoscyphus fraxineus, an ascomycete fungus, UK
RMCM95PD–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by
RMDAAJGB–Ash Fraxinus excelsior leaves with Leaflet Roll Gall caused by the Plant Louse Psyllopsis fraxini.
RF2HFBM64–Canadian ash-leaved maple blooms abundantly filling the air with allergenic pollen and causing allergic diseases - hay fever and rhinoconjunctivitis,
RFTW1JRC–Ash Dieback disease
RF2R9KABP–Prociphilus bumeliae. A colony of hairy, wax-covered aphid secretions on an ash tree.
RF2A5MFAE–Ash trees with Ash Dieback disease on a sunny day
RFPWEMXH–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RF2CBW6F5–An Abstract, based on tree bark patterns
RM2AN8EHH–Annual report of the Maine Agricultural Experiment Station . Fig. 56. Nymphs of the Woolly Aphid, Schisoneura lanigera onwater shoot of mountain ash, Pyrns amcricaiia,—the immediate progenyof migrants from elm leaf rosette. Photographed at Orono, June 28,1912. Enlarged.. Fig. 57. Young rosette photographed June 6, [913. Small pictureat right. Fig. 58. Old rosette photographed July 17, 1013. Work ofWoolly Aphid of apple on elm leaves. See page 14. [531-12-16] fflnibn&ity of JWaine. MAINE AGRICULTURAL EXPERIMENT STATION ORONO, MAINE. CHASj D. WOODS, Director. POTATO GROWING AND POTATO DISEASES F
RME9PB50–Common Ash (Fraxinus excelsior) dieback of leaves, caused by Ash Dieback (Chalara fraxinea) fungal disease, Norfolk, England, June
RMD05M9X–bracket fungus on mature European Common beech at ground level on trunk ultimately leading to rot death on old wood
RMPG44MR–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 334 GENERAL PLANT PATHOLOGY Crateria.—C. Schimper uses this term for a leaf blade which de- velops ascidia, as the ascidial white ash discovered by George H. Shull. Cyclochoiisis (Fermond).—Division of an axial organ in two direc- tions, so that in place of a simple axis there arise whole clusters of secondary axes. Dedoublement (chorisis, doubling).—Congenital division of an organ in which several parts arise out of a single primordium. Lateral and serial dedoublement are distinguishab
RM2JW3HKH–Ash dieback disease signs in ash trees (Fraxinus excelsior), caused by Hymenoscyphus fraxineus, an ascomycete fungus, UK
RMCM95PT–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by
RF2R9KAAK–Prociphilus bumeliae. A colony of hairy, wax-covered aphid secretions on an ash tree.
RFPWEMX0–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RF2CBW6G3–An Abstract, based on tree bark patterns
RMREPG7M–. The trees of America [microform] : native and foreign, pictorially and botanically delineated and scientifically and popularly described, being considered principally with reference to their geography and history, soil and situation, propagation and culture, accidents and diseases .... Trees; Arbres. â 'nia. i'in. for the manna ash, (amen-tube 10- 'â¢"ed on a short 'ff off from the 'It'd. Embryo leaves. Leaf- i^es of Per- (Icciduous 'h eligible lica, or for lern parts I'e, besides is said to ^pan, and '⢠A tree en Mclia, to grow as only a Melia azedarach, THE PRIDE OF CHINA. Synonymes.
RMD05M5K–bracket fungus on mature European Common beech at ground level on trunk ultimately leading to rot death on old wood
RMPG45RA–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 351.—Actinonema rosae. 3, branching strand of superficial mycelium; 4, spores. After Southworth. A. manihotes Hen. on cassava in Africa. A. tremulae Sacc. occurs on aspen; A. melutispora B. & Br. on ash. Actinonema Fries (p. 505) Pyenidia very small, not ostiolate, with a radiating mycelial growth on the surface of the host; conidia elongate, on short conidiophores. A genus of about fifteen species, chiefly leaf parasites. A. rosse (Lib.) Fr.^'*- "« Spots rounded or irregular, black or purple, epiphyllous, often. Plea
RM2JW3HHM–Ash dieback disease signs in ash trees (Fraxinus excelsior), caused by Hymenoscyphus fraxineus, an ascomycete fungus, UK
RMCM95PF–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by
RF2R9KAB3–Prociphilus bumeliae. A colony of hairy, wax-covered aphid secretions on an ash tree.
RFPWEN21–Cigarette on loose shredded tobacco, close up.
RMRDE20A–. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 334 GENERAL PLANT PATHOLOGY Crateria.—C. Schimper uses this term for a leaf blade which de- velops ascidia, as the ascidial white ash discovered by George H. Shull. Cyclochoiisis (Fermond).—Division of an axial organ in two direc- tions, so that in place of a simple axis there arise whole clusters of secondary axes. Dedoublement (chorisis, doubling).—Congenital division of an organ in which several parts arise out of a single primordium. Lateral and serial dedoublement are distinguishab
RMD05MBM–bracket fungus on mature European Common beech at ground level on trunk ultimately leading to rot death on old wood
RMCM95PJ–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by
RF2R9KAD3–Prociphilus bumeliae. A colony of hairy, wax-covered aphid secretions on an ash tree.
RFPWEN1H–Native southeast asia cigarette and shredded tobacco.
RMRDE5AP–. The fungi which cause plant disease . Plant diseases; Fungi. Fig. 351.—Actinonema rosae. 3, branching strand of superficial mycelium; 4, spores. After Southworth. A. manihotes Hen. on cassava in Africa. A. tremulae Sacc. occurs on aspen; A. melutispora B. & Br. on ash. Actinonema Fries (p. 505) Pyenidia very small, not ostiolate, with a radiating mycelial growth on the surface of the host; conidia elongate, on short conidiophores. A genus of about fifteen species, chiefly leaf parasites. A. rosse (Lib.) Fr.^'*- "« Spots rounded or irregular, black or purple, epiphyllous, often. Plea
RMD05M4Y–bracket fungus on mature European Common beech at ground level on trunk ultimately leading to rot death on old wood
RMCM95W3–The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RF2R9KABF–Prociphilus bumeliae. A colony of hairy, wax-covered aphid secretions on an ash tree.
RFPWEMYJ–Hand holding a Native southeast asia cigarette.
RMRFCBC7–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. AGE (Days after emergence) A(3E (Days after emergence). 5 10 15 20 25 30 35 16 22 28 Temperature (C) Temperature (C) Figure 3.—Effect of treatments and experimental conditions on size of lesions on green ash leaf discs inoculated with G.fraxini. A. Effect of t>pe of wounding. Means of three experiments. Treatments were NW = Nonwounded with a 10 jjl droplet of sterile distilled water, NI = Nonwounded, inoculated with G.fraxini, CH =
RMD05MAR–bracket fungus on mature European Common beech at ground level on trunk ultimately leading to rot death on old wood
RMCM95W9–The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RF2R9KABA–Prociphilus bumeliae. A colony of hairy, wax-covered aphid secretions on an ash tree.
RFPWEMX7–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RMRF3RXE–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figure 1.—In vitro technioque used to study infection of green ash by Gnomoniella fraxini. A. Plastic petri dish (100 mm diam.) containing 2% water agar (4 mm deep) with wells cut using a sterile cork borer (18 mm diam.) and leaf discs of corresponding size being placed into wells with a sterile forceps. B. Arrangement of ash leaf discs in wells in water agar. Arrow indicates 4 mm diam. aluminum rod the tip of which was heated and tou
RMCM95W2–The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEMXP–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RMRFCBDT–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. Figure 1.—In vitro technioque used to study infection of green ash by Gnomoniella fraxini. A. Plastic petri dish (100 mm diam.) containing 2% water agar (4 mm deep) with wells cut using a sterile cork borer (18 mm diam.) and leaf discs of corresponding size being placed into wells with a sterile forceps. B. Arrangement of ash leaf discs in wells in water agar. Arrow indicates 4 mm diam. aluminum rod the tip of which was heated and tou
RMCM95TY–The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEN1R–Native southeast asia cigarette and shredded tobacco.
RMRF3RW4–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. AGE (Days after emergence) A(3E (Days after emergence). 5 10 15 20 25 30 35 16 22 28 Temperature (C) Temperature (C) Figure 3.—Effect of treatments and experimental conditions on size of lesions on green ash leaf discs inoculated with G.fraxini. A. Effect of t>pe of wounding. Means of three experiments. Treatments were NW = Nonwounded with a 10 jjl droplet of sterile distilled water, NI = Nonwounded, inoculated with G.fraxini, CH =
RMCM95W6–The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEN0N–Native southeast asia cigarette and shredded tobacco.
RMRFCBCJ–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. 1 5 9 13 17 21 25 29 TIME AFTER APPEARANCE (DAYS) Figure 2.—A-G. Leaf development of six green ash seedlings grown in the greenhouse. A-F. Size (leaf length) of individual leaves at up to 10 nodes. Length of one leaf per node measured from axillary leaf bud to tip of terminal leaflet. Leaves numbered in order of appearance from bottom to top of shoot. Growth curves of individual leaves based on a greenhouse grown green ash seedling tr
RMCM95PH–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEN08–Hand holding a Native southeast asia cigarette.
RMRF3RWH–. Recent research on foliage diseases : conference proceedings : Carlisle, Pennsylvania, May 29-June 2, 1989. Leaves Diseases and pests United States Congresses. 1 5 9 13 17 21 25 29 TIME AFTER APPEARANCE (DAYS) Figure 2.—A-G. Leaf development of six green ash seedlings grown in the greenhouse. A-F. Size (leaf length) of individual leaves at up to 10 nodes. Length of one leaf per node measured from axillary leaf bud to tip of terminal leaflet. Leaves numbered in order of appearance from bottom to top of shoot. Growth curves of individual leaves based on a greenhouse grown green ash seedling tr
RMCM95R1–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEMYY–Hand holding a Native southeast asia cigarette.
RMCM95R5–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEMWM–Cigarette on loose shredded tobacco, close up.
RMCM95PX–Suffolk, UK. 31st October 2012. The general public has been asked to report suspected cases of ash dieback diseases caused by the chalera fraxinea fungus. The symptoms include wilting leaves and brown dying leaves. This picture taken on 31 October 2012 in Suffolk, where there have been confirmed cases of ash dieback, illustrates the difficulty distinguishing with an untrained eye between natural autumnal changes and what might be a diseased tree.
RFPWEMYK–Hand holding a Native southeast asia cigarette.
RFPWEMWR–Cigarette on loose shredded tobacco, close up.
RFPWEN31–Cigarette on loose shredded tobacco, close up.
RFPWEN0C–Hand holding a Native southeast asia cigarette.
RFPWEN18–Native southeast asia cigarette and shredded tobacco.
RFPWEMY7–Hand holding a Native southeast asia cigarette.
RFPWEN1E–Native southeast asia cigarette and shredded tobacco.
RFPWEN15–Native southeast asia cigarette and shredded tobacco.
RFPWEMYR–Hand holding a Native southeast asia cigarette.
RFPWEMY1–Hand holding a Native southeast asia cigarette.
RFPWEN2M–Cigarette on loose shredded tobacco, close up.
RFPWEN22–Loose shredded tobacco isolated.
RFPWEN12–Native southeast asia cigarette and shredded tobacco.
RFPWEMXE–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RFPWEMY0–Hand holding a Native southeast asia cigarette.
RFPWEMYA–Hand holding a Native southeast asia cigarette.
RFPWEMX1–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RFPWEN0W–Native southeast asia cigarette and shredded tobacco.
RFPWEN04–Hand holding a Native southeast asia cigarette.
RFPWEMX5–Hand holding a cigarette. Hand holding cigarette between two fingers.
RFPWEMWT–Cigarette on loose shredded tobacco, close up.
RFPWEN37–Cigarette on loose shredded tobacco, close up.
RFPWEN1T–Native southeast asia cigarette and shredded tobacco.
RFPWEMXN–Hand holding a cigarette. Unlighted cigarette holden between two fingers.
RFPWEN2F–Cigarette on loose shredded tobacco, close up.
RFPWEMWJ–Cigarette on loose shredded tobacco, close up.
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