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Beckett Jr., John L.

Danielson, Donna

Milauskas, Susan

Miller, Fredric D.

Whelan, Christopher J.

Objects (132 results)

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Euonymus scale on Euonymus fortunei Euonymus fortunei ‘Vegetus’ (Big-leaved wintercreeper)

SpecimenEuonymus scale on Euonymus fortunei Euonymus fortunei ‘Vegetus’ (Big-leaved wintercreeper)

June 12 1997

Aesculus leafminer (Unknown insect) on Aesculus glabra Willd. (Ohio buckeye)

SpecimenAesculus leafminer (Unknown insect) on Aesculus glabra Willd. (Ohio buckeye)

June 17 1998

Danielson, Donna

Ailanthus webworm (Atteva punctella) on Ailanthus altissima (Mill.) Swingle (tree of heaven)

SpecimenAilanthus webworm (Atteva punctella) on Ailanthus altissima (Mill.) Swingle (tree of heaven)

August 20 1997

Miller, Fredric D.

Alder leafminer (Fenusa dohrnii) on Alnus glutinosa (L.) Gaertn. (European black alder)

SpecimenAlder leafminer (Fenusa dohrnii) on Alnus glutinosa (L.) Gaertn. (European black alder)

June 4 1997

Danielson, Donna

Aphids (honeydew and sooty mold) (Undetermined aphids) on Quercus rubra L. (northern red oak)

SpecimenAphids (honeydew and sooty mold) (Undetermined aphids) on Quercus rubra L. (northern red oak)

July 21 1998

Lewis, Tim

Dodder (Cuscuta spp. on Vitis L. (grape)

SpecimenDodder (Cuscuta spp. on Vitis L. (grape)

August 3 1999

Danielson, Donna

Armillaria root rot (Armillaria) on Quercus rubra L. (northern red oak)

SpecimenArmillaria root rot (Armillaria) on Quercus rubra L. (northern red oak)

October 13 1995

Jacobs, Karel

Ascochyta blight (Ascochyta syringae) on Syringa vulgaris L. (common lilac)

SpecimenAscochyta blight (Ascochyta syringae) on Syringa vulgaris L. (common lilac)

May 1 1998

Danielson, Donna

Ash plant bug (Tropidosteptes amoemus) on Fraxinus mandshurica Rupr. (Manchurian ash)

SpecimenAsh plant bug (Tropidosteptes amoemus) on Fraxinus mandshurica Rupr. (Manchurian ash)

June 4 1997

Danielson, Donna

Asian longhorned beetle (Anoplophora glabripennis) on Acer saccharinum L. (silver maple)

SpecimenAsian longhorned beetle (Anoplophora glabripennis) on Acer saccharinum L. (silver maple)

August 11 1998

Danielson, Donna, Jacobs, Karel, Wiegrefe, Sue

Azalea sawfly (Mematus lipovskyi) on Rhododendron calendulaceum f. aurantium (Flame azalea)

SpecimenAzalea sawfly (Mematus lipovskyi) on Rhododendron calendulaceum f. aurantium (Flame azalea)

May 20 1998

Danielson, Donna

Bagworm (Thyridopteryx ephemeraformis) on Juniperus spp. (Juniper)

SpecimenBagworm (Thyridopteryx ephemeraformis) on Juniperus spp. (Juniper)

June 1 1997

Bald cypress rust mite (Epitrimerus taxodii) on Taxodium distichum (L.) Rich. (bald-cypress)

SpecimenBald cypress rust mite (Epitrimerus taxodii) on Taxodium distichum (L.) Rich. (bald-cypress)

August 12 1998

Bark beetles (Dendroctonus spp.) on Pseudotsuga menziesii ‘Glauca’ (Blue Douglas Fir)

SpecimenBark beetles (Dendroctonus spp.) on Pseudotsuga menziesii ‘Glauca’ (Blue Douglas Fir)

July 17 1997

Danielson, Donna

Birch leafminer (Fenusa pusilla) on Betula papyrifera Marsh. (paper birch)

SpecimenBirch leafminer (Fenusa pusilla) on Betula papyrifera Marsh. (paper birch)

July 30 1997

Danielson, Donna

Black pine needle scale (Nuculaspis califormica) on Pinus mugo var. rostrata (Ant.) Hoopes (Beaked mugo pine)

SpecimenBlack pine needle scale (Nuculaspis califormica) on Pinus mugo var. rostrata (Ant.) Hoopes (Beaked mugo pine)

April 16 1997

Danielson, Donna, Jacobs, Karel, Miller, Fredric D.

Black rot of grapevine (Guignardia bidwellii) on Vitis amurensis Rupr. (Amur grape)

SpecimenBlack rot of grapevine (Guignardia bidwellii) on Vitis amurensis Rupr. (Amur grape)

June 1 1999

Danielson, Donna

Black spot of elm (seeds) (Stegophora ulmea) on Ulmus laevis Pall. (RUSSIAN ELM)

SpecimenBlack spot of elm (seeds) (Stegophora ulmea) on Ulmus laevis Pall. (RUSSIAN ELM)

May 10 1999

Ware, George

Black spot on Ulmus laevis Pall. (RUSSIAN ELM)

SpecimenBlack spot on Ulmus laevis Pall. (RUSSIAN ELM)

June 26 1996

Black spot of rose (Diplocarpon rosea) on Rosa mollis Smith (rose)

SpecimenBlack spot of rose (Diplocarpon rosea) on Rosa mollis Smith (rose)

July 30 1997

Danielson, Donna

Black vine weevil (Hotiorhynchus sulcatus) on Rhododendron L. (azalea)

SpecimenBlack vine weevil (Hotiorhynchus sulcatus) on Rhododendron L. (azalea)

June 26 1997

Danielson, Donna

Botrytis blight (Botrytis cinerea) on Crataegus mollis (Torr. & Gray) Scheele (downy hawthorn)

SpecimenBotrytis blight (Botrytis cinerea) on Crataegus mollis (Torr. & Gray) Scheele (downy hawthorn)

May 11 1999

Danielson, Donna

Botryosphaeria (Sphaeropsis spp.) on Cornus stolonifera var. baileyi (Bailey dogwood)

SpecimenBotryosphaeria (Sphaeropsis spp.) on Cornus stolonifera var. baileyi (Bailey dogwood)

September 6 1997

Danielson, Donna

Cedar-apple rust (Gymnosporangium juniperi-virginianae) on Malus coronaria var. dasycalyx Rehd. (wild sweet crabapple)

SpecimenCedar-apple rust (Gymnosporangium juniperi-virginianae) on Malus coronaria var. dasycalyx Rehd. (wild sweet crabapple)

July 30 1997

Danielson, Donna

Cedar-hawthorn rust (Crataegus sp.) on Crataegus L. (hawthorn)

SpecimenCedar-hawthorn rust (Crataegus sp.) on Crataegus L. (hawthorn)

June 27 – September 3 1996

Cedar-quince rust on (Gymnosporangium clavipes) on Crataegus pruinosa (Wendl.) K. Koch (frosted hawthorn)

SpecimenCedar-quince rust on (Gymnosporangium clavipes) on Crataegus pruinosa (Wendl.) K. Koch (frosted hawthorn)

May 7 1997

Danielson, Donna

Cedar-quince rust (Gymnosporangium clavipes) on Juniperus scopulorum ‘Pathfinder’ (Pathfinder Rocky Mountain juniper)

SpecimenCedar-quince rust (Gymnosporangium clavipes) on Juniperus scopulorum ‘Pathfinder’ (Pathfinder Rocky Mountain juniper)

April 23 1997

Danielson, Donna

Chlorosis on Halesia carolina L. (Carolina silverbell)

SpecimenChlorosis on Halesia carolina L. (Carolina silverbell)

September 9 1997

Danielson, Donna

Chlorosis on Acer rubrum Acer rubrum ‘Franksred’ (RED SUNSET®) red maple)

SpecimenChlorosis on Acer rubrum Acer rubrum ‘Franksred’ (RED SUNSET®) red maple)

July 7 1997

Danielson, Donna

Cicada damage (Magicicada spp.) on Malus Mill. (crabapple)

SpecimenCicada damage (Magicicada spp.) on Malus Mill. (crabapple)

July 11 1997

Cooley spruce gall adelgid (Aselges cooleyi) on Picea pungens ‘Hoopsii’ (Hoops blue spruce)

SpecimenCooley spruce gall adelgid (Aselges cooleyi) on Picea pungens ‘Hoopsii’ (Hoops blue spruce)

April 16 1997

Miller, Fredric D.

Crown rust (Puccinia coronata) on Rhamnus cathartica L. (common buckthorn)

SpecimenCrown rust (Puccinia coronata) on Rhamnus cathartica L. (common buckthorn)

May 27 1999

Whelan, Christopher J.

Cryptodiaporthe canker (Cryptodiaporthe corin) on Cornus alternifolia L. f. (pagoda dogwood)

SpecimenCryptodiaporthe canker (Cryptodiaporthe corin) on Cornus alternifolia L. f. (pagoda dogwood)

June 17 1998

Seymour, Deb

Cytospora (Leucostoma kunzei) on Picea spp. (Spruce)

SpecimenCytospora (Leucostoma kunzei) on Picea spp. (Spruce)

September 16 1997

Dothistroma needle blight (Dothistroma pini) on Pinus flexilis James (limber pine)

SpecimenDothistroma needle blight (Dothistroma pini) on Pinus flexilis James (limber pine)

April 21 1999

Danielson, Donna

Downy leaf spot on Carya spp. (Hickory)

SpecimenDowny leaf spot on Carya spp. (Hickory)

May 28 1998

Danielson, Donna

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