Aesculus leaf blotch (Guignardia aesculi) on Aesculus flava Sol. (yellow buckeye) (3.91894)
Date: September 9 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Aesculus leaf blotch (Guignardia aesculi) onAesculus flava Sol. (yellow buckeye). Specimen collected on grid location R-44/95-79 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Aesculus leafminer (Unknown insect) on Aesculus glabra Willd. (Ohio buckeye) (3.91790)
Date: June 17 1998Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Aesculus leafminer (Unknown insect) on Aesculus glabra Willd. (Ohio buckeye). Speciment collected north of Frost Hill at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Alder leafminer (Fenusa dohrnii) on Alnus glutinosa (L.) Gaertn. (European black alder) (3.91792)
Date: June 4 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Alder leafminer (Fenusa dohrnii) on Alnus glutinosa (L.) Gaertn. (European black alder). Specimen collected on grid location G-42/20-22 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Alnus glutinosa (L.) Gaertn. (European black alder), close-up of fruits (3.83334)
Creator: Danielson, Donna
Type: Photographic image
Description:Alnus glutinosa (L.) Gaertn. (European black alder), last year's fruits; current year catkins
Extent: 1 slide
Arborvitae leafminer (Argyresthia thuiella) on Thuja occidentalis L. (eastern arborvitae) (3.91796)
Date: March 27 2000Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Arborvitae leafminer damage (Argyresthia thuiella) on Thuja occidentalis L. (eastern arborvitae). Specimen collected South of Meadow Lake at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Ascochyta blight (Ascochyta syringae) on Syringa vulgaris L. (common lilac) (3.91798)
Date: May 1 1998Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Ascochyta blight (Ascochyta syringae) on Syringa vulgaris L. (common lilac). Specimen collected near the Visitor Center at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Ash anthracnose (Gloeosporium aridum) on Fraxinus pennsylvanica ‘Patmore’ (Patmore green ash) (3.91801)
Date: July 10 2002Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Ash anthracnose (Gloeosporium aridum) on Fraxinus pennsylvanica ‘Patmore’ (Patmore green ash). Specimen collected on grid location N-45/Area at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Ash midrib gall (Contarinia canadensis) on Fraxinus pennsylvanica (Green ash) (3.91868)
Date: June 4 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Ash midrib gall (Contarinia canadensis) on Fraxinus pennsylvanica (Green ash). Specimen brought into the Plant Clinic at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Ash plant bug (Tropidosteptes amoemus) on Fraxinus mandshurica Rupr. (Manchurian ash) (3.91802)
Date: June 4 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Ash plant bug (Tropidosteptes amoemus) on Fraxinus mandshurica Rupr. (Manchurian ash). Specimen collected on grid location J-125/65-00 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Asian longhorned beetle (Anoplophora glabripennis) on Acer saccharinum L. (silver maple) (3.91804)
Date: August 11 1998Creator: Danielson, Donna, Jacobs, Karel, Wiegrefe, Sue
Type: Specimen
Description:A riker mount containing Asian long-horned beetle (Anoplophora glabripennis) on Acer saccharinum L. (silver maple). Specimen collected in Bloomingdale, Illinois.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Azalea sawfly (Mematus lipovskyi) on Rhododendron calendulaceum f. aurantium (Flame azalea) (3.91808)
Date: May 20 1998Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Azalea sawfly (Mematus lipovskyi) on Rhododendron calendulaceum f. aurantium (Flame azalea). Specimen collected on grid location Q-58/87-48 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Bacterial blight of lilac (Pseudomonas syrinae) on Syringa vulgaris L. (common lilac) (3.91809)
Date: May 4 2000Creator: Jacobs, Karel, Danielson, Donna
Type: Specimen
Description:A riker mount containing Bacterial blight of lilac (Pseudomonas syrinae) on Syringa vulgaris L. (common lilac). Specimen collected east of the Ground Cover Garden at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Bacterial wetwood on elm (Ulmus americana) (3.114724)
Creator: Danielson, Donna
Type: Photographic image
Description:Bacterial wetwood (also known as slime flux) on American elm (Ulmus americana).
Extent: 1 slide
Bark beetles (Dendroctonus spp.) on Pseudotsuga menziesii ‘Glauca’ (Blue Douglas Fir) (3.91814)
Date: July 17 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Bark beetles (Dendroctonus spp.) on Pseudotsuga menziesii ‘Glauca’ (Blue Douglas Fir). Specimen collected on grid location H-53/35-86 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Birch leafminer (Fenusa pusilla) on Betula papyrifera Marsh. (paper birch) (3.91815)
Date: July 30 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Birch leafminer (Fenusa pusilla) on Betula papyrifera Marsh. (paper birch). Specimen collected on grid location Y-22/81-29 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Black pine needle scale (Nuculaspis califormica) on Pinus mugo var. rostrata (Ant.) Hoopes (Beaked mugo pine) (3.91816)
Date: April 16 1997Creator: Danielson, Donna, Jacobs, Karel, Miller, Fredric D.
Type: Specimen
Description:A riker mount containing Black pine needle scale (Nuculaspis califormica) on Pinus mugo var. rostrata (Ant.) Hoopes (Beaked mugo pine). Specimen collected on grid location F-51/40-95 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Black rot of grapevine (Guignardia bidwellii) on Vitis amurensis Rupr. (Amur grape) (3.91817)
Date: June 1 1999Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Black rot of grapevine (Guignardia bidwellii) on Vitis amurensis Rupr. (Amur grape). Specimen collected on grid location Q59/01-11 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Black spot of rose (Diplocarpon rosea) on Rosa mollis Smith (rose) (3.91820)
Date: July 30 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Black spot of rose (Diplocarpon rosea) on Rosa mollis Smith (rose). Specimen collected on grid location Z-32/68-05 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Black vine weevil (Hotiorhynchus sulcatus) on Rhododendron L. (azalea) (3.91821)
Date: June 26 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Black vine weevil (Hotiorhynchus sulcatus) on Rhododendron L. (azalea). Specimen collected in the Plants of Acid Soils Collection at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Botryosphaeria (Sphaeropsis spp.) on Cornus stolonifera var. baileyi (Bailey dogwood) (3.91823)
Date: September 6 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Botryosphaeria (Sphaeropsis spp.) on Cornus stolonifera var. baileyi (Bailey dogwood). Specimen colleted on grid location P-47/Area at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Botrytis blight (Botrytis cinerea) on Crataegus mollis (Torr. & Gray) Scheele (downy hawthorn) (3.91822)
Date: May 11 1999Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Botrytis blight (Botrytis cinerea) on Crataegus mollis (Torr. & Gray) Scheele (downy hawthorn). Specimen collected near P-2 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Branches: A Newsletter for the Volunteers of The Morton Arboretum, Winter 2004 (3.107081)
Date: 2004Creator: Crosby, Cindy, Danielson, Donna, Kenaston, Sally
Type: Serial
Description:This digitized issue of the Winter 2004 Branches Newsletter contains articles on the following; a focus on the Super Stuffers volunteer group who fold, stuff and affix mailing labels to Arboretum mailings; new Gatehouse procedures as a result of the new main entrance at Park Boulevard and Illinois Route 53; efforts to control Gypsy moths at the arboretum including trapping adult males and searching for egg masses; and an introduction to Edith Makra, in the newly created position of Community Trees Advocate. A list of new volunteers, tuition free classes for volunteers, volunteer opportunities and an in memoriam section is also included.
Extent: 6 pages
Brown Rot (Monilinia) (Monilinia fructicola) on Prunus triloba Lindl. (flowering almond) (3.91911)
Date: May 21 1998Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Brown Rot (Monilinia) (Monilinia fructicola) on Prunus triloba Lindl. (flowering almond). Located near the Staff Parking Lot at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Cedar-apple rust (Gymnosporangium juniperi-virginianae) on Malus coronaria var. dasycalyx Rehd. (wild sweet crabapple) (3.91825)
Date: July 30 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Cedar-apple rust (Gymnosporangium juniperi-virginianae) on Malus coronaria var. dasycalyx Rehd. (wild sweet crabapple). Specimen collected on grid location BB-74/47-60 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Cedar-quince rust (Gymnosporangium clavipes) on Juniperus scopulorum ‘Pathfinder’ (Pathfinder Rocky Mountain juniper) (3.91830)
Date: April 23 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Cedar-quince rust (Gymnosporangium clavipes) on Juniperus scopulorum ‘Pathfinder’ (Pathfinder Rocky Mountain juniper). Specimen collected on grid location B-54/35-05 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Cedar-quince rust on (Gymnosporangium clavipes) on Crataegus pruinosa (Wendl.) K. Koch (frosted hawthorn) (3.91829)
Date: May 7 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Cedar-quince rust on (Gymnosporangium clavipes) on Crataegus pruinosa (Wendl.) K. Koch (frosted hawthorn). Specimen collected on grid location L-16/27-89 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Chlorosis on Acer rubrum Acer rubrum ‘Franksred’ (RED SUNSET®) red maple) (3.91832)
Date: July 7 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Chlorosis on Acer rubrum ‘Franksred’ (RED SUNSET®) red maple). Specimen collected on grid location G-44/97-09 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Chlorosis on Halesia carolina L. (Carolina silverbell) (3.91831)
Date: September 9 1997Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Chlorosis on Halesia carolina L. (Carolina silverbell). Specimen collected on grid location J-44/35-80 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Damage on wafer ash (Ptelea trifoliata) by two-marked treehoppers (Enchenopa binotata) (3.114714)
Creator: Danielson, Donna
Type: Photographic image
Description:Damage (stippling) on wafer ash (Ptelea trifoliata) by two-marked treehoppers (Enchenopa binotata)
Extent: 1 slide
Damage on wafer ash (Ptelea trifoliata) by two-marked treehoppers (Enchenopa binotata) (3.114715)
Type: Photographic image
Description:Damage (stippling) on wafer ash (Ptelea trifoliata) by two-marked treehoppers (Enchenopa binotata)
Extent: 1 slide
Dodder (Cuscuta spp. on Vitis L. (grape) (3.91795)
Date: August 3 1999Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Dodder (Cuscuta spp. on Vitis L. (grape). Specimen collected near P-24 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Dothistroma needle blight (Dothistroma pini) on Pinus flexilis James (limber pine) (3.91842)
Date: April 21 1999Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Dothistroma needle blight (Dothistroma pini) on Pinus flexilis James (limber pine). Specimen collected on grid location F-52/55-00 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Downy leaf spot on Carya spp. (Hickory) (3.91844)
Date: May 28 1998Creator: Danielson, Donna
Type: Specimen
Description:A riker mount containing Downy leaf spot on Carya spp. (Hickory). Specimen collected on grid location L-57/68-75 at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Dutch Elm Disease (Ophiostoma ulmi) on Ulmus americana L. (American elm) (3.91843)
Creator: Danielson, Donna, Lewis, Tim, Miller, Fredric D., Jacobs, Karel
Type: Specimen
Description:A riker mount containing Dutch Elm Disease (Ophiostoma ulmi) on Ulmus americana L. (American elm). Specimen collected in the Elm Collection at The Morton Arboretum.
These specimens are available for checkout via the Plant Pathology Lab of The Morton Arboretum. For more information, fill out the form here and an Arboretum staff member will contact you.
Dutch elm disease flag (3.114698)
Creator: Danielson, Donna
Type: Photographic image
Description:Dutch elm disease flag on an elm tree (Ulmus), dying twig with Dutch elm disease at top of tree. Flagging is when leaves on an upper branch curl and turn gray-green or yellow and finally brown.
Extent: 1 slide
Dutch Elm Disease in the Chicago Area 1970-1996 (3.57534)
Date: 1999Creator: Jacobs, Karel, Danielson, Donna
Type: Article