Trees

Ornamentals: Trees

Remove Filters: Diseases^(X) Vascular Wilts^(X) 5 Sizes Available^(X) Landscape^(X)

217 Images of 14 Subjects

View Image Details

Image	Subject Name	Scientific Name	Description
5430484	Dutch elm disease	Ophiostoma ulmi	Pesotum ulmi stage of Ophiostoma ulmi present in an incubated elm branch wood chip.
5377019	Dutch elm disease	Ophiostoma ulmi	disease cycle
1427028	sudden oak death	Phytophthora ramorum	China Camp State Park, California
5458864	Dutch elm disease	Ophiostoma ulmi	Conidial head of synnema showing conidial production
5458862	Dutch elm disease	Ophiostoma ulmi	Conidial heads of synnemata
5458863	Dutch elm disease	Ophiostoma ulmi	Conidial head of synnema showing conidial production
5458860	Dutch elm disease	Ophiostoma ulmi	Synnemata of Graphium stage
5458861	Dutch elm disease	Ophiostoma ulmi	Synnemata of Graphium stage
5458859	Dutch elm disease	Ophiostoma ulmi	Synnemata of Graphium stage emerge from cut stem incubated in moist chamber
5458857	Dutch elm disease	Ophiostoma ulmi	Synnemata of Graphium stage emerging from cut stem incubated in moist chamber
5458858	Dutch elm disease	Ophiostoma ulmi	Synnemata of Graphium stage emerge from cut stem incubated in moist chamber
5458855	Dutch elm disease	Ophiostoma ulmi	Dark rings symptomatic of infection
5458856	Dutch elm disease	Ophiostoma ulmi	Dark ring symptomatic of infection
5458667	bacterial leaf scorch	Xylella fastidiosa	Bacterial Leaf Scorch symptoms on maple leaves.
5458671	bacterial leaf scorch	Xylella fastidiosa	Bacterial Leaf Scorch symptoms on maple leaves.
5458668	bacterial leaf scorch	Xylella fastidiosa	Bacterial Leaf Scorch and Black Spot on an elm leaf.
5458669	bacterial leaf scorch	Xylella fastidiosa	Bacterial Leaf Scorch symptoms on elm.
5457955	bacterial leaf scorch	Xylella fastidiosa	Bacterial leaf scorch on Ulmus spp.
1427068	sudden oak death	Phytophthora ramorum	Dried ooze caused by bleeding from P. ramorum infection on coast live oak.
1427003	sudden oak death	Phytophthora ramorum
1427001	sudden oak death	Phytophthora ramorum
1427054	sudden oak death	Phytophthora ramorum	Canker and zone lines caused by P. ramorum.
1301076	Dutch elm disease	Ophiostoma ulmi	Crown symptoms of Dutch elm disease on a large street tree.
1427095	sudden oak death	Phytophthora ramorum	Coast live oak mortality from P. ramorum infection at China Camp State Park, CA.
1427071	sudden oak death	Phytophthora ramorum	Coast live oak dying from P. ramorum infection, China Camp State Park, CA.
1427048	sudden oak death	Phytophthora ramorum	Tanoak dying from P. ramorum infection, Muir Woods State Park, CA.
1427050	sudden oak death	Phytophthora ramorum	Tanoak sprouts dying from P. ramorum infection.
1427052	sudden oak death	Phytophthora ramorum	Tanoak dying from P. ramorum infection, Muir Woods State Park, CA.
1427046	sudden oak death	Phytophthora ramorum
1427047	sudden oak death	Phytophthora ramorum	Tip dieback caused by P. ramorum on tanoak.
1427034	sudden oak death	Phytophthora ramorum
1427035	sudden oak death	Phytophthora ramorum	Big Sur, California
1427041	sudden oak death	Phytophthora ramorum	Big Sur, California
1427020	sudden oak death	Phytophthora ramorum	Big Sur, California
1427021	sudden oak death	Phytophthora ramorum	Big Sur, California
1427023	sudden oak death	Phytophthora ramorum	Big Sur, California
1427004	sudden oak death	Phytophthora ramorum
1427019	sudden oak death	Phytophthora ramorum	Big Sur, California
1427016	sudden oak death	Phytophthora ramorum	Big Sur, California
1427109	sudden oak death	Phytophthora ramorum
1427022	sudden oak death	Phytophthora ramorum	Big Sur, California
1427051	sudden oak death	Phytophthora ramorum	Tanoak sprouts dying from P. ramorum infection.
1427080	sudden oak death	Phytophthora ramorum	Tanoak dying from P. ramorum infection, Muir Woods State Park, CA.
1427096	sudden oak death	Phytophthora ramorum	Tanoak dying from P. ramorum infection at Muir Woods.
1427049	sudden oak death	Phytophthora ramorum	Tanoak dying from P. ramorum infection.
3226027	oak wilt	Ceratocystis fagacearum	root graft
4213093	Dutch elm disease	Ophiostoma ulmi	dead and dying trees
1427110	sudden oak death	Phytophthora ramorum
1427083	sudden oak death	Phytophthora ramorum	Zone lines of P. ramorum on coast live oak.
4822051	bacterial leaf scorch	Xylella fastidiosa	healthy tree & trees infected with Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host.
1427036	sudden oak death	Phytophthora ramorum
3046072	bacterial leaf scorch	Xylella fastidiosa
1427112	sudden oak death	Phytophthora ramorum
4213094	Dutch elm disease	Ophiostoma ulmi	close-up view of wilting leaves
4214002	oak wilt	Ceratocystis fagacearum	center of dead/dying trees
3226026	oak wilt	Ceratocystis fagacearum	veinal necrosis
4822046	bacterial leaf scorch	Xylella fastidiosa	Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptoms characteristically develop from bottom of the tree upward and inside of crown outward. Older leaves will have a "scorched" curled appearance while younger leaves at branch tips will appear healthy.
1427113	sudden oak death	Phytophthora ramorum
1427101	sudden oak death	Phytophthora ramorum
1427094	sudden oak death	Phytophthora ramorum	Coast live oak dying from P. ramorum infection.
1427093	sudden oak death	Phytophthora ramorum	P. ramorum symptoms on Rhododendron in central CA. Leaves were confirmed as infected with P. ramorum by Jenny Davidson.
1427069	sudden oak death	Phytophthora ramorum	Signs of bleeding caused by P. ramorum infection on lichen-covered bark of coast live oak.
1436137	mimosa wilt	Fusarium oxysporum f.sp. perniciosum	stem damage
1427070	sudden oak death	Phytophthora ramorum	Residual signs of bleeding caused by P. ramorum infection on bark surface lichens.
1427092	sudden oak death	Phytophthora ramorum	P. ramorum leaf symptoms on California laurel (bay).
1427005	sudden oak death	Phytophthora ramorum
1427002	sudden oak death	Phytophthora ramorum
1427103	sudden oak death	Phytophthora ramorum	Tip droop symptom of sudden oak death on tanoak.
1427086	sudden oak death	Phytophthora ramorum	Coast live oak dying from P. ramorum infection.
1427064	sudden oak death	Phytophthora ramorum	Coast live oak dying from P. ramorum infection.
1427074	sudden oak death	Phytophthora ramorum	Big Sur, California
3226029	oak wilt	Ceratocystis fagacearum	leaf symptoms
2252001	Dutch elm disease	Ophiostoma ulmi	vascular discoloration in winged elm
1427045	sudden oak death	Phytophthora ramorum	Tip dieback symptoms caused by P. ramorum on tanoak.
1427075	sudden oak death	Phytophthora ramorum	Tip blight symptoms on tanoak caused by P. ramorum.
1427099	sudden oak death	Phytophthora ramorum	Tip blight symptoms of sudden oak death on tanoak.
2251098	Dutch elm disease	Ophiostoma ulmi	crown symptoms
2252004	oak wilt	Ceratocystis fagacearum	leaf symptoms
2252007	Dutch elm disease	Ophiostoma ulmi	branch dieback
4822048	bacterial leaf scorch	Xylella fastidiosa	Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Symptomatic tree with crown dieback, premature leaf abcission, chlorotic and "scorched" foliage.
4822049	bacterial leaf scorch	Xylella fastidiosa	Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host. Leaves developing "scorched" appearance.
5430495	Verticillium wilt	Verticillium dahliae	Vascular streaking in a maple branch infected with Verticillium dahliae.
1427039	sudden oak death	Phytophthora ramorum
4214003	oak wilt	Ceratocystis fagacearum	infection center
5429794	laurel wilt	Raffaelea lauricola	10-day-old culture on CSMA medium, grown at 25C with alternating light and dark, 71X
5427648	bacterial leaf scorch	Xylella fastidiosa
3046073	bacterial leaf scorch	Xylella fastidiosa
4213098	oak wilt	Ceratocystis fagacearum	leaf symptoms
4822041	Dutch elm disease	Ophiostoma ulmi	trees killed along road
1436136	mimosa wilt	Fusarium oxysporum f.sp. perniciosum
1427072	sudden oak death	Phytophthora ramorum	Coast live oak infected with P. ramorum.
1427105	sudden oak death	Phytophthora ramorum	Symptom progression on coast live oaks, from wilting to dead.
3226030	oak wilt	Ceratocystis fagacearum	early symptoms on foliage
1427006	sudden oak death	Phytophthora ramorum
5379779	Dutch elm disease (novi-ulmi)	Ophiostoma novo-ulmi
5379780	Dutch elm disease (novi-ulmi)	Ophiostoma novo-ulmi
5379824	chestnut blight or canker	Cryphonectria parasitica
5379825	chestnut blight or canker	Cryphonectria parasitica
4822042	Fusarium root rot and wilt	Fusarium oxysporum	Thinning crown of infected tree
4822043	Fusarium root rot and wilt	Fusarium oxysporum	Distinctive pale to dark brown (sometimes with a purplish hue)staining or discoloration of the xylem. This soil borne fungus enters the roots by direct penetration or through root wounds during transplanting/landscape maintance, or vectored by feeding injury caused by plant parastic nematodes. Once inside a susceptible host, the fungus enters the xylem and colonizes the vascular system restricting water flow.
5383223	laurel wilt	Raffaelea lauricola	Camphor tree with dieback symptoms caused by laurel wilt infection
5383224	laurel wilt	Raffaelea lauricola	Symptoms of laurel wilt infection on camphor tree
5383225	laurel wilt	Raffaelea lauricola	Symptoms of laurel wilt infection on camphor tree
5383226	laurel wilt	Raffaelea lauricola	Group of sassafras trees with symptoms of advancing laurel wilt disease
5383227	laurel wilt	Raffaelea lauricola	Leaf symptoms of laurel wilt disease in a group of small sassafras trees
5383213	laurel wilt	Raffaelea lauricola	Redbay mortality on Jekyll Island caused by laurel wilt disease
5383208	laurel wilt	Raffaelea lauricola	Redbay mortality on Jekyll Island caused by laurel wilt disease
5383211	laurel wilt	Raffaelea lauricola	Redbay stump and sprouts following mortality caused by laurel wilt disease
5383212	laurel wilt	Raffaelea lauricola	Initial symptoms of laurel wilt disease in a group of sassafras trees
5334062	Dutch elm disease	Ophiostoma ulmi
5334064	Dutch elm disease	Ophiostoma ulmi
5334076	Verticillium wilt	Verticillium dahliae	vascular discoloration and foliar symptoms
5335033	Verticillium wilt	Verticillium dahliae	vascular discoloration
5335034	Verticillium wilt	Verticillium dahliae	vascular discoloration
5338031	Verticillium wilts	Verticillium spp.	microscopic view of Verticillium conidiophores and conidia
5334063	Dutch elm disease (novi-ulmi)	Ophiostoma novo-ulmi	treatment for Dutch elm disease
5033086	Dutch elm disease	Ophiostoma ulmi
1949012	oak wilt	Ceratocystis fagacearum	Foliar symptoms caused by Ceratocystis fagacearum on oak.
1949013	oak wilt	Ceratocystis fagacearum	Foliar symptoms of Ceratocystis fagacearum on black oak (Quercus velutina) showing bronzing starting at the leaf apices and lobes, and a localized area of green tissue around the base of the midrib.
5367232	ash yellows phytoplasma	Candidatus Phytoplasma fraxini	Green ash tree afflicted with ash yellows, a phytoplasma disease.
5367230	ash yellows phytoplasma	Candidatus Phytoplasma fraxini	White ash tree afflicted with ash yellows, a phytoplasma disease.
5367229	ash yellows phytoplasma	Candidatus Phytoplasma fraxini	Close-up view of leaves of a green ash tree afflicted with ash yellows, a phytoplasma disease.
5367228	ash yellows phytoplasma	Candidatus Phytoplasma fraxini	Green ash tree afflicted with ash yellows, a phytoplasma disease.
5366744	Verticillium wilts	Verticillium spp.	Silver maple tree (Acer saccharinum) showing symptoms of verticillium wilt (Verticillium sp.).
5366743	Verticillium wilts	Verticillium spp.	Sapwood of a maple tree showing symptoms of verticillium wilt (Verticillium sp.).
5366741	Dutch elm disease	Ophiostoma ulmi	Discoloration of elm wood due to the presence of Dutch elm disease (Ophiostoma ulmi).
5366740	Dutch elm disease	Ophiostoma ulmi	Very close-up view of the coremia (asexual fruiting structures) of Dutch elm disease (Ophiostoma ulmi).
5366739	Dutch elm disease	Ophiostoma ulmi	Elm tree afflicted with Dutch elm disease (Ophiostoma ulmi).
5366738	Dutch elm disease	Ophiostoma ulmi	Flagging of foliage in an elm tree afflicted with Dutch elm disease (Ophiostoma ulmi).
5359735	Dutch elm disease	Ophiostoma ulmi	Portion of elm wood afflicted with Dutch elm disease showing galleries created by the European elm bark beetle, which vectors the disease.
5359734	Dutch elm disease	Ophiostoma ulmi	Portion of an elm tree suffering from Dutch Elm Disease, with bark beetle galleries underneath the bark.
5357466	Dutch elm disease	Ophiostoma ulmi	Elm tree aflicted with Dutch elm disease (Ophiostoma ulmi).
1473274	mimosa wilt	Fusarium oxysporum f.sp. perniciosum	sap streak in wilting mimosa; 7/15/1953
1473275	mimosa wilt	Fusarium oxysporum f.sp. perniciosum	sap streak in wilting mimosa; 7/15/1953
1407052	Dutch elm disease	Ophiostoma ulmi	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.
1509095	oak wilt	Ceratocystis fagacearum	Oak wilt
1501035	oak wilt	Ceratocystis fagacearum	Oak wilt, trenching at Whiskey Canyon Ranch to eliminate root grafts
1501037	oak wilt	Ceratocystis fagacearum	Oak wilt, trenching at Whiskey Canyon Ranch to eliminate root grafts
1501038	oak wilt	Ceratocystis fagacearum	Oak wilt, trenching at Whiskey Canyon Ranch to eliminate root grafts
1501039	oak wilt	Ceratocystis fagacearum	Oak wilt, old (6 mos +) pressure pad on live oak
1501053	oak wilt	Ceratocystis fagacearum	Oak wilt, V.A.Cemetary
1501054	oak wilt	Ceratocystis fagacearum	Oak wilt center
1501055	oak wilt	Ceratocystis fagacearum	Oak wilt center, Kerrville State Park
1501056	oak wilt	Ceratocystis fagacearum	Oak wilt kill in pasture, S. of Kerrville
1501034	oak wilt	Ceratocystis fagacearum	Oak wilt, vascular streak
1501041	oak wilt	Ceratocystis fagacearum	Oak wilt, Texas red oak leaf symptoms
1501042	oak wilt	Ceratocystis fagacearum	Oak wilt, Texas red oak leaf symptoms
1501043	oak wilt	Ceratocystis fagacearum	Oak wilt, Texas red oak leaf symptoms
1501032	Dutch elm disease	Ophiostoma ulmi	Dutch elm disease, vascular streak
1501040	oak wilt	Ceratocystis fagacearum	Oak wilt may move through root grafts between trees similar to this live oak root grafting
1501044	oak wilt	Ceratocystis fagacearum	Oak wilt, Live oak leaf symptoms
1501045	oak wilt	Ceratocystis fagacearum	Oak wilt, Live oak leaf symptoms
1501046	oak wilt	Ceratocystis fagacearum	Oak wilt, Live oak leaf symptoms
1501047	oak wilt	Ceratocystis fagacearum	Oak wilt, Live oak leaf symptoms
1501050	oak wilt	Ceratocystis fagacearum	Oak wilt, Live oakbranch showing symptoms
1501057	oak wilt	Ceratocystis fagacearum	Oak wilt, live oak, Kerrville State Park
1501058	oak wilt	Ceratocystis fagacearum	Oak wilt, live oak, Kerrville State Park
1501059	oak wilt	Ceratocystis fagacearum	Oak wilt, live oak, Kerrville State Park
1501030	mimosa wilt	Fusarium oxysporum f.sp. perniciosum	Mimosa wilt, stem streak - survivor
5027096	ash yellows phytoplasma	Candidatus Phytoplasma fraxini
5027097	ash yellows phytoplasma	Candidatus Phytoplasma fraxini	Thin crowns, dieback and mortality caused by the ash yellows phytoplasma
1427067	sudden oak death	Phytophthora ramorum	bleeding canker
3036029	Verticillium wilt	Verticillium albo atrum	vascular streaking - maple
3036030	mimosa wilt	Fusarium oxysporum f.sp. perniciosum	leaf symptoms
3036031	mimosa wilt	Fusarium oxysporum f.sp. perniciosum	vascular streaking
3036044	Dutch elm disease	Ophiostoma ulmi	Accumulated wood in firewood cut area DED Atlanta
1224218	blue stain	Ophiostoma huntii	Fungus on Pecan. Ambrosia Beetles.
5027025	Verticillium wilts	Verticillium spp.
1427078	sudden oak death	Phytophthora ramorum	P. ramorum zone lines on coast live oak.
1427079	sudden oak death	Phytophthora ramorum	P. ramorum zone lines on coast live oak.
5033075	Dutch elm disease	Ophiostoma ulmi
5033081	Dutch elm disease	Ophiostoma ulmi	crown symptoms
5033082	Dutch elm disease	Ophiostoma ulmi	branch symptoms
5033083	Dutch elm disease	Ophiostoma ulmi	crown symptoms
5033084	Dutch elm disease	Ophiostoma ulmi	crown symptoms
5033085	Dutch elm disease	Ophiostoma ulmi
5027023	Verticillium wilts	Verticillium spp.	vascular staining of cherry
5027024	Verticillium wilts	Verticillium spp.	death of a cherry tree
1458055	Dutch elm disease	Ophiostoma ulmi	streaking of vascular tissue
1427097	sudden oak death	Phytophthora ramorum
1455146	Dutch elm disease	Ophiostoma ulmi	Girdling cut made upon detection to prevent root graft transmission
1427082	sudden oak death	Phytophthora ramorum	Coast live oak mortality at China Camp State Park, CA.
1427100	sudden oak death	Phytophthora ramorum	Oak firewood for sale in Santa Clara, CA.
1427106	sudden oak death	Phytophthora ramorum	Zone lines of P. ramorum on coast live oak.
1427108	sudden oak death	Phytophthora ramorum	Oak firewood for sale in Santa Clara, CA
1427029	sudden oak death	Phytophthora ramorum	Jennifer Juzwik in the foreground.; China Camp State Park, California
1427104	sudden oak death	Phytophthora ramorum	Zone lines of P. ramorum on coast live oak.
1427076	sudden oak death	Phytophthora ramorum	Coast live oak dying from P. ramorum infection.
1427085	sudden oak death	Phytophthora ramorum	Bleeding on bark surface of coast live oak, caused by P. ramorum.
1427087	sudden oak death	Phytophthora ramorum	P. ramorum symptoms on Rhododendron. Leaf was confirmed as infected with P. ramorum by Jenny Davidson.
1427088	sudden oak death	Phytophthora ramorum	P. ramorum symptoms on Rhododendron. Upper leaf was confirmed as infected by Jenny Davidson.
1427111	sudden oak death	Phytophthora ramorum	This leaf was confirmed as positive for P. ramorum by Jenny Davidson.
1427084	sudden oak death	Phytophthora ramorum	Symptoms of P. ramorum on huckleberry.
1427055	sudden oak death	Phytophthora ramorum	P. ramorum zone lines on coast live oak.
1427056	sudden oak death	Phytophthora ramorum	Zone lines of P. ramorum on coast live oak.
1427058	sudden oak death	Phytophthora ramorum	P. ramorum zone lines on coast live oak.
1427059	sudden oak death	Phytophthora ramorum	P. ramorum zone lines on coast live oak.
1427060	sudden oak death	Phytophthora ramorum	P. ramorum zone lines on coast live oak.
1427061	sudden oak death	Phytophthora ramorum	Bleeding from P. ramorum canker on coast live oak.
1427062	sudden oak death	Phytophthora ramorum	Showing Hypoxylon thouarsianum, a sapwood decay fungus that is also commonly isolated from Sudden Oak Death - affected oak trees, although it is also found on trees not affected by SOD. The presence of the half-dome-shaped fruiting bodies are indicative of advanced stages of SOD. Newly formed fruiting bodies are olive greenish or shiny black and release powdery green spores upon contact. Older fruiting bodies are dull black.
1427063	sudden oak death	Phytophthora ramorum	Showing Hypoxylon thouarsianum, a sapwood decay fungus that is also commonly isolated from Sudden Oak Death - affected oak trees, although it is also found on trees not affected by SOD. The presence of the half-dome-shaped fruiting bodies are indicative of advanced stages of SOD. Newly formed fruiting bodies are olive greenish or shiny black and release powdery green spores upon contact. Older fruiting bodies are dull black.
1427031	sudden oak death	Phytophthora ramorum	zone lines
1427032	sudden oak death	Phytophthora ramorum	zone lines
1427024	sudden oak death	Phytophthora ramorum	China Camp State Park, California
1427025	sudden oak death	Phytophthora ramorum	China Camp State Park, California
1427026	sudden oak death	Phytophthora ramorum	China Camp State Park, California
1427027	sudden oak death	Phytophthora ramorum	China Camp State Park, California
4822044	Fusarium root rot and wilt	Fusarium oxysporum	fungi in agar plate
4822050	bacterial leaf scorch	Xylella fastidiosa	Early leaf symptoms development of Fastidious xylem-inhabiting bacterium which occludes vascular tissue as it develops in the host.
2733034	Dutch elm disease	Ophiostoma ulmi	small stem split to show vascular discoloration.
3226028	oak wilt	Ceratocystis fagacearum	root grafts
3226035	oak wilt	Ceratocystis fagacearum	bulldozer trenching to break root grafting between infected and noninfected trees
3227017	oak wilt	Ceratocystis fagacearum	trenching for severing root grafts between infected and uninfected trees
3227018	oak wilt	Ceratocystis fagacearum	root grafts
3227021	oak wilt	Ceratocystis fagacearum	trenching for severing root grafts between infected and uninfected trees
2251099	Verticillium wilt	Verticillium albo atrum	crown with wilt symptoms
0488108	Dutch elm disease	Ophiostoma ulmi

Narrow Results by:

Subject Specific Filters:

Order: (show all)

Family: (show all)

Image Specific Filters:

Descriptor: (show all)

Image Setting:

View:

Person in Image:

Country:

Author: (show all)

Ornamentals: Trees