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21st century
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2000
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Adams, Stephanie
Bell, Lisa
Danielson, Donna
G., Dean
Hedborn Jr., Edward A.
Jacobs, Karel
Malatia, Brian

Objects (36 results)

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Algal growth (Algae) on Taxus L. (yew)
SpecimenAlgal growth (Algae) on Taxus L. (yew)

January 24 2004


Arborvitae leafminer (Argyresthia thuiella) on Thuja occidentalis L. (eastern arborvitae)
SpecimenArborvitae leafminer (Argyresthia thuiella) on Thuja occidentalis L. (eastern arborvitae)

March 27 2000

Danielson, Donna


Ash anthracnose (Gloeosporium aridum) on Fraxinus pennsylvanica ‘Patmore’ (Patmore green ash)
SpecimenAsh anthracnose (Gloeosporium aridum) on Fraxinus pennsylvanica ‘Patmore’ (Patmore green ash)

July 10 2002

Danielson, Donna


Azalea bark scale (Eriococcus azaleae) on Rhododendron mucronulatum Turcz. (Korean rhododendron)
SpecimenAzalea bark scale (Eriococcus azaleae) on Rhododendron mucronulatum Turcz. (Korean rhododendron)

May 25 2000

Bell, Lisa


Bacterial blight of lilac (Pseudomonas syrinae) on Syringa vulgaris L. (common lilac)
SpecimenBacterial blight of lilac (Pseudomonas syrinae) on Syringa vulgaris L. (common lilac)

May 4 2000

Jacobs, Karel, Danielson, Donna


Bacterial leaf scorch (Xylella fastidiosa) on Quercus rubra L. (northern red oak)
SpecimenBacterial leaf scorch (Xylella fastidiosa) on Quercus rubra L. (northern red oak)

October 2 2000


Butternut canker on Juglans cinerea L. (butternut)
SpecimenButternut canker on Juglans cinerea L. (butternut)

January 2006


Coniothyrium leaf spot (Coniothyrium sp.) on Ulmus americana L. (American elm)
SpecimenConiothyrium leaf spot (Coniothyrium sp.) on Ulmus americana L. (American elm)

August 2 2002


Dogwood anthracnose (Discula destruxtiva) on Cornus florida L. (flowering dogwood)
SpecimenDogwood anthracnose (Discula destruxtiva) on Cornus florida L. (flowering dogwood)

August 2 2002


Entomosporium on Sorbus L. (mountain-ash)
SpecimenEntomosporium on Sorbus L. (mountain-ash)

July 1 2010


Eyespot galls (Acericecis ocellaris) on Acer rubrum L. (red maple)
SpecimenEyespot galls (Acericecis ocellaris) on Acer rubrum L. (red maple)

June 9 2000


Fire blight (Erwinia amylovora) on Pyrus communis 'Bartlett' (Dwarf Bartlett Pear)
SpecimenFire blight (Erwinia amylovora) on Pyrus communis 'Bartlett' (Dwarf Bartlett Pear)

June 30 2004


Flea weevil damage (unknown flea weevil) on Ulmus americana 'Moline' (MOLINE AMERICAN ELM)
SpecimenFlea weevil damage (unknown flea weevil) on Ulmus americana 'Moline' (MOLINE AMERICAN ELM)

August 3 2003

Danielson, Donna


Frost damage (Abiotic - cold temperatures during leaf expansion) on Cercidiphyllum japonicum Sieb. & Zucc. (katsura tree)
SpecimenFrost damage (Abiotic - cold temperatures during leaf expansion) on Cercidiphyllum japonicum Sieb. & Zucc. (katsura tree)

July 10 2002

Danielson, Donna


Fusarium canker (Fusarium lateritium) on Hibiscus syriacus L. (rose-of-sharon)
SpecimenFusarium canker (Fusarium lateritium) on Hibiscus syriacus L. (rose-of-sharon)

June 5 2001


Hypoxylon canker (Hypoxylon deustum) on Acer rubrum (Red maple)
SpecimenHypoxylon canker (Hypoxylon deustum) on Acer rubrum (Red maple)

November 3 2000


Iron chlorosis (High pH soil (Abiotic problem)) on Quercus palustris Münchh. (pin oak)
SpecimenIron chlorosis (High pH soil (Abiotic problem)) on Quercus palustris Münchh. (pin oak)

July 10 2006

Danielson, Donna


Melampsora rust (Melamposora medusae) on Populus sp. (Poplar)
SpecimenMelampsora rust (Melamposora medusae) on Populus sp. (Poplar)

August 12 2004


Miner on Platanus × acerifolia (Ait.) Willd. (London planetree)
SpecimenMiner on Platanus × acerifolia (Ait.) Willd. (London planetree)

August 12 2004


Oak wilt (Ceratocystis fagacearum) on Quercus macrocarpa Michx. (bur oak)
SpecimenOak wilt (Ceratocystis fagacearum) on Quercus macrocarpa Michx. (bur oak)

July 2 2004

Malatia, Brian


Pestalotiopsis blight (Pestalotiopsis funerea) on Thuja sp. (Arborvitae)
SpecimenPestalotiopsis blight (Pestalotiopsis funerea) on Thuja sp. (Arborvitae)

June 1 2000


Phomopsis gall on Viburnum sp. (Viburnum)
SpecimenPhomopsis gall on Viburnum sp. (Viburnum)

April 1 2007


Pine needle rust (Coleosporium asterum) on Pinus resinosa Ait. (red pine)
SpecimenPine needle rust (Coleosporium asterum) on Pinus resinosa Ait. (red pine)

August 2 2002


Pine-pine gall rust (Endocronartium harknessii) on Pinus sylvestris L. (Scots pine)
SpecimenPine-pine gall rust (Endocronartium harknessii) on Pinus sylvestris L. (Scots pine)

September 2001


Plum pockets (Taphrina communis) on Prunus persica (L.) Batsch (peach)
SpecimenPlum pockets (Taphrina communis) on Prunus persica (L.) Batsch (peach)

June 6 2000

Hedborn Jr., Edward A.


Powdery mildew (Phyllactinia guttata) on Quercus macrocarpa Michx. (bur oak)
SpecimenPowdery mildew (Phyllactinia guttata) on Quercus macrocarpa Michx. (bur oak)

August 2 2002

G., Dean


Powdery mildew on Physocarpus opulifolius 'Diabolo' (Common Ninebark 'Diablo')
SpecimenPowdery mildew on Physocarpus opulifolius 'Diabolo' (Common Ninebark 'Diablo')

August 9 2005


Rose rosette disease on Rosa sp. (Rose)
SpecimenRose rosette disease on Rosa sp. (Rose)

May 31 2000

Danielson, Donna


Verticillium wilt (Verticillium dahliae) on Fraxinus pennsylvanica (Green ash)
SpecimenVerticillium wilt (Verticillium dahliae) on Fraxinus pennsylvanica (Green ash)

August 7 2002


White pine aphid (Cinara strobi) on Pinus strobus L. (eastern white pine)
SpecimenWhite pine aphid (Cinara strobi) on Pinus strobus L. (eastern white pine)

October 10 2002


White pine weevil (Phyllactinia guttata) on Pinus strobus L. (eastern white pine)
SpecimenWhite pine weevil (Phyllactinia guttata) on Pinus strobus L. (eastern white pine)

July 22 2002

Danielson, Donna


Winter/salt damage (Abiotic) on Pinus strobus L. (eastern white pine)
SpecimenWinter/salt damage (Abiotic) on Pinus strobus L. (eastern white pine)

January 1 2010


Webworm on Juniperus communis ‘Haverbeck’ (Haverbeck common juniper)
SpecimenWebworm on Juniperus communis ‘Haverbeck’ (Haverbeck common juniper)

March 22 2010


Gall on branch of Hamamelis virginiana L. (common witch-hazel)
SpecimenGall on branch of Hamamelis virginiana L. (common witch-hazel)

March 9 2012


Scale on Daphne alpina L. (alpine daphne)
SpecimenScale on Daphne alpina L. (alpine daphne)

April 5 2010


Tea Scale (Fiorinia theae) on Camellia japonica (Japanese camellia)
SpecimenTea Scale (Fiorinia theae) on Camellia japonica (Japanese camellia)

2014


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