Dutch elm disease
Ophiostoma ulmi (Buisman) Nannf.

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Image Descriptor Description
5430484 Sign Pesotum ulmi stage of Ophiostoma ulmi present in an incubated elm branch wood chip.
5377019 Life Cycle disease cycle
5469114 Sign
5469115 Sign
5430483 Symptoms American elm tree showing typical flagging and dieback symptoms due to Dutch elm disease.
5458864 Asexual Spore Conidial head of synnema showing conidial production
5458862 Asexual Spore Conidial heads of synnemata
5458863 Asexual Spore Conidial head of synnema showing conidial production
5458860 Asexual Spore Synnemata of Graphium stage
5458861 Asexual Spore Synnemata of Graphium stage
5458859 Asexual Spore Synnemata of Graphium stage emerge from cut stem incubated in moist chamber
5458857 Asexual Spore Synnemata of Graphium stage emerging from cut stem incubated in moist chamber
5458858 Asexual Spore Synnemata of Graphium stage emerge from cut stem incubated in moist chamber
5458855 Symptoms Dark rings symptomatic of infection
5458856 Symptoms Dark ring symptomatic of infection
1247182 Symptoms
4215048 Symptoms early wilt symptoms
1458054 Symptoms 1999
1301078 Sign Coremia (spore-bearing bodies) of Ophiostoma ulmi in a Scolytus multistriatus gallery
4822040 Symptoms Foliage wilting, flagging (yellow), defoliation, and crown dieback
1301076 Symptoms Crown symptoms of Dutch elm disease on a large street tree.
0355036 Symptoms advanced symptoms on American elm
2733033 Symptoms Initial flagging (yellowing) of branches in crown.
1442052 Symptoms Ceratacystid ulmi dying tree Ulmus americana Milliken ,CO7-16-74
4213096 Symptoms wilt symptoms
4213093 Symptoms dead and dying trees
0454016 Symptoms Elm tree severely attacked by Ophiostoma ulmi in late summer, showing a range of foliar symptoms.
1301074 Symptoms Large specimen elm tree killed
4213094 Symptoms close-up view of wilting leaves
2252006 Symptoms sapwood stain
2252001 Symptoms vascular discoloration in winged elm
2251098 Symptoms crown symptoms
2252007 Symptoms branch dieback
5424394 Symptoms Single, infected tree showing "flagging" symptom of individual branches dying back.
4912014 Symptoms
1398052 Symptoms
1396140 Symptoms Wildcat Mountain Park
4554043 Symptoms
1400152 Symptoms
3227027 Symptoms in winged elm
4822041 Infestation trees killed along road
1398053 Symptoms Advanced crown symptoms.
1388032 Symptoms Flagging branches throughout the crown.
1400153 Symptoms Dying elm, marked for removal. July
1396139 Symptoms
1396136 Symptoms
4213095 Symptoms old infection center
1301073 Symptoms Early wilt symptoms
1396138 Symptoms Wildcat Mountain Park
0454017 Symptoms Cross section of an Ophiostoma ulmi-infected elm branch, showing characteristic dark spots in the wood.
5408097 Asexual Spore
5408098 Asexual Spore
5383056 Symptoms
5368586 Sign Characteristic asexual stage or "synnemata", conidiophores protruding from the end of an infected branch.
5368587 Sign Characteristic asexual stage or "synnemata", conidiophores protruding from the end of an infected branch.
5368588 Sign Characteristic asexual stage or "synnemata", conidiophores protruding from the end of an infected branch.
5368589 Sign Characteristic asexual stage or "synnemata", conidiophores protruding from the end of an infected branch.
5334062 Symptoms
5334064 Symptoms
5368707 Symptoms Characteristic asexual stage or "synnemata", conidiophores with clusters of colorless conidia at the top.
5368708 Sign Characteristic asexual stage or "synnemata", conidiophores with clusters of colorless conidia at the top.
5368709 Testing Incubation of symptomatic pieces of elm branches, surface sterilized and placed in an incubation chamber.
5368710 Sign Tree limbs and leaves shown symptoms of dieback.
5334066 Treatment Dutch Elm Disease Treatment, Penn. State Campus
5033086 Symptoms
5359732 Culture Dutch elm disease fungus (described here as Ceratocystis ulmi) growing in a petri dish in the laboratory.
5359733 Culture Dutch elm disease fungus (described here as Ceratocystis ulmi) growing in a petri dish in the laboratory.
5366741 Symptoms Discoloration of elm wood due to the presence of Dutch elm disease (Ophiostoma ulmi).
5366740 Fruiting Bodies Very close-up view of the coremia (asexual fruiting structures) of Dutch elm disease (Ophiostoma ulmi).
5366739 Symptoms Elm tree afflicted with Dutch elm disease (Ophiostoma ulmi).
5366738 Symptoms Flagging of foliage in an elm tree afflicted with Dutch elm disease (Ophiostoma ulmi).
5359735 Sign Portion of elm wood afflicted with Dutch elm disease showing galleries created by the European elm bark beetle, which vectors the disease.
5359734 Damage Portion of an elm tree suffering from Dutch Elm Disease, with bark beetle galleries underneath the bark.
5357037 Symptoms Elm tree aflicted with Dutch elm disease (described here as Ceratocystis ulmi), Fort Morgan, Colorado, 1970.
5357466 Damage Elm tree aflicted with Dutch elm disease (Ophiostoma ulmi).
1407052 Symptoms Like all living things, trees eventually die and decay, victims of many living and manmade agents. The agent here is Dutch elm disease. To ward off this widespread infection, keep elm trees well pruned. If they do become infected, cut and destroy the diseased trees as soon as possible.
1501032 Symptoms Dutch elm disease, vascular streak
1501033 Symptoms Dutch elm disease, Natchez Trace Pkwy.
5029009 Symptoms discoloration in wood; Vascular streaks caused by Ophiostoma ulmi in elm wood.
5029008 Symptoms Early wilt symptoms of Dutch elm disease.
3036044 Control Accumulated wood in firewood cut area DED Atlanta
5039091 Asexual Spore Graphium-type spores, also know as coremia or synnema, in gallery
5033075 Symptoms
5033081 Symptoms crown symptoms
5033082 Symptoms branch symptoms
5033083 Symptoms crown symptoms
5033084 Symptoms crown symptoms
5033085 Symptoms
5038038 Symptoms
5038044 Symptoms crown symptoms
5037070 Tree(s) American elm killed by Dutch elm disease
2110077 Symptoms late-stage crown symptoms; May 1999
2110078 Symptoms dead trees with sprouts; July 1999
2110079 Symptoms branch symptoms; July 1999
2111018 Symptoms "branch symptoms (in the foreground) and killed trees (in the background); July 1999"
2111019 Symptoms vascular staining in the wood of an affected branch; 1996
2110080 Symptoms branch symptoms
1458055 Feature(s) streaking of vascular tissue
1455146 Control Girdling cut made upon detection to prevent root graft transmission
1400174 Management American elm tree removal
0176077 Symptoms Elm shoots variously attacked by Dutch elm disease (Ophiostoma ulmi); note yellowing and browning of foliage and formation of crozier-like hooks at twig ends.
1247039 Symptoms Covington, GA. 1978.
2733034 Symptoms small stem split to show vascular discoloration.
3227028 Symptoms with bark peeled showing cambuim streaking
3227029 Symptoms cut stems showing staining
4215047 Symptoms vascular staining
0488108 Symptoms

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