Dutch elm disease
Ophiostoma ulmi (Buisman) Nannf.

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107 Images    

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5430484
5430484

Sign
Cheryl Kaiser

5377019
5377019

Life Cycle
International Society of Arboriculture

5469114
5469114

Sign
Eric Honeycutt

5469115
5469115

Sign
Eric Honeycutt

5430483
5430483

Symptoms
Cheryl Kaiser

5458864
5458864

Asexual Spore
Bruce Watt

5458862
5458862

Asexual Spore
Bruce Watt

5458863
5458863

Asexual Spore
Bruce Watt

5458860
5458860

Asexual Spore
Bruce Watt

5458861
5458861

Asexual Spore
Bruce Watt

5458859
5458859

Asexual Spore
Bruce Watt

5458857
5458857

Asexual Spore
Bruce Watt

5458858
5458858

Asexual Spore
Bruce Watt

5458855
5458855

Symptoms
Bruce Watt

5458856
5458856

Symptoms
Bruce Watt

1247182
1247182

Symptoms
Terry S. Price

4215048
4215048

Symptoms
Fred Baker

1458054
1458054

Symptoms
North Carolina Forest Service Archive

1301078
1301078

Sign
Joseph O'Brien

4822040
4822040

Symptoms
Edward L. Barnard

1301076
1301076

Symptoms
Joseph O'Brien

0355036
0355036

Symptoms
Robert L. Anderson

2733033
2733033

Symptoms
Edward L. Barnard

1442052
1442052

Symptoms
USDA Forest Service - Region 2 - Rocky Mountain Region Archive

4213096
4213096

Symptoms
Minnesota Department of Natural Resources Archive

4213093
4213093

Symptoms
Minnesota Department of Natural Resources Archive

0454016
0454016

Symptoms
UK Forestry Commission Archive

1301074
1301074

Symptoms
Joseph O'Brien

4213094
4213094

Symptoms
Minnesota Department of Natural Resources Archive

2252006
2252006

Symptoms
Jane Taylor

2252001
2252001

Symptoms
USDA Forest Service Archive

2251098
2251098

Symptoms
USDA Forest Service Archive

2252007
2252007

Symptoms
Jane Taylor

5424394
5424394

Symptoms
John Hartman

4912014
4912014

Symptoms
Petr Kapitola

1398052
1398052

Symptoms
USDA Forest Service - Northeastern Area Archive

1396140
1396140

Symptoms
USDA Forest Service - Northeastern Area Archive

4554043
4554043

Symptoms
Petr Kapitola

1400152
1400152

Symptoms
Linda Haugen

3227027
3227027

Symptoms
R. Scott Cameron

4822041
4822041

Infestation
Edward L. Barnard

1398053
1398053

Symptoms
Steven Katovich

1388032
1388032

Symptoms
Steven Katovich

1400153
1400153

Symptoms
Linda Haugen

1396139
1396139

Symptoms
USDA Forest Service - Northeastern Area Archive

1396136
1396136

Symptoms
USDA Forest Service - Northeastern Area Archive

4213095
4213095

Symptoms
Minnesota Department of Natural Resources Archive

1301073
1301073

Symptoms
Joseph O'Brien

1396138
1396138

Symptoms
USDA Forest Service - Northeastern Area Archive

0454017
0454017

Symptoms
UK Forestry Commission Archive

5408097
5408097

Asexual Spore
Tamla Blunt

5408098
5408098

Asexual Spore
Tamla Blunt

5383056
5383056

Symptoms
Fabio Stergulc

5368586
5368586

Sign
Paul Bachi

5368587
5368587

Sign
Paul Bachi

5368588
5368588

Sign
Paul Bachi

5368589
5368589

Sign
Paul Bachi

5334062
5334062

Symptoms
Roland J. Stipes

5334064
5334064

Symptoms
Roland J. Stipes

5368707
5368707

Symptoms
Paul Bachi