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The U.S. Department of Agriculture Forest Service is a Federal agency that manages public lands in national forests and grasslands. The Forest Service is also the largest forestry research organization in the world, and provides technical and financial assistance to state and private forestry agencies. Gifford Pinchot, the first Chief of the Forest Service, summed up the purpose of the Forest Service—"to provide the greatest amount of good for the greatest amount of people in the long run."
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Image Subject Name Scientific Name Description
1361164 pitch canker Fusarium subglutinans Pitch-soaked wood
0364069 pitch canker Fusarium subglutinans terminal dieback
2252014 canker and die back of Siberian Elm Tubercularia ulmea canker on white poplar
2252013 canker and die back of Siberian Elm Tubercularia ulmea on Siberian elm
0364072 pitch canker Fusarium subglutinans terminal dieback
0364012 Cylindrocladium root diseases Cylindrocladium spp. on eucalyptus
3036018 pitch canker Fusarium subglutinans resinosus on fusiform gall
1198002 Neonectria canker Neonectria galligena on birch
1406128 beech bark disease Nectria coccinea severe damage
1467025 Nectria canker Nectria spp. sporodochia
1396150 Nectria canker Nectria spp.
1399022 Nectria canker Nectria spp.
1468229 Fusarium wilts, blights, rots and damping-off Fusarium spp.
1468228 Fusarium wilts, blights, rots and damping-off Fusarium spp.
1301056 beech bark canker Neonectria coccinea var. faginata Sporocarps, east shore of Lake Michigan, 2000.
1198001 Neonectria canker Neonectria galligena Perithecia of one of the fungi involved in the beech bark disease complex.
5061017 Fusarium wilts, blights, rots and damping-off Fusarium spp. Canker on walnut caused by Fusarium sp.
5061018 Fusarium wilts, blights, rots and damping-off Fusarium spp. Cankiers on the bole of a young walnut, caused by Fusarium sp.
5061019 Fusarium wilts, blights, rots and damping-off Fusarium spp. Canker at base of a young walnut
5061020 Fusarium wilts, blights, rots and damping-off Fusarium spp. Canker on the bole of a young walnut
1400155 beech bark disease Nectria coccinea Cankered stem of beech following attack by beech scale and infection by Neonectria (beech bark disease complex) in Ontario.
1468231 Fusarium wilts, blights, rots and damping-off Fusarium spp.
1361163 pitch canker Fusarium subglutinans After the fungus gains entrance into the tree, the tips of terminal and lateral branches are often girdled and killed.
1400104 Nectria canker Nectria spp. "target canker" on aspen, Nicolet National Forest, Wisconsin.
0488094 Fusarium damping-off Fusarium solani canker on yellow-poplar with typical bleeding
1406130 beech bark disease Nectria coccinea
1406127 beech bark disease Nectria coccinea
0364046 Cylindrocladium root diseases Cylindrocladium spp. diseased root
5056033 Neonectria canker Neonectria galligena Perithecia
5056036 Neonectria canker Neonectria galligena Asci and spores
5035051 pitch canker Fusarium circinatum Flagging symptoms
5035052 pitch canker Fusarium circinatum Cankers and branch mortality
5037027 Verticillium wilts Verticillium spp.
5048088 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease. Beech snap is common in stands affected by beech bark disease.
5048062 beech bark disease Nectria coccinea Cottony coverings of Cryptococcus fagisuga on American beech.
5048063 beech bark disease Nectria coccinea "Beech snap," commonly associated with beech bark disease.
5048070 beech bark disease Nectria coccinea Sampling beech for presence of Neonectria coccinea.
5048071 beech bark disease Nectria coccinea Cottony soverings of Cryptococcus fagisuga and tarry spots, associated with beech bark disease.
5048072 beech bark disease Nectria coccinea Examining a snapped beech affected by beech bark disease. People in image: Roger Mech, MI DNR; Manfred Mielke, USFS
5048073 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5048075 beech bark disease Nectria coccinea with Cryptococcus fagisuga on the trunk of an American beech.
5048077 beech bark disease Nectria coccinea with Cryptococcus fagisuga on American beech.
5048078 beech bark disease Nectria coccinea Tarry spot on beech affected with beech bark disease.
5048080 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5048081 beech bark disease Nectria coccinea Rough bark on American beech, which serves as a location for Cryptococcus fagisuga to become established.
5042088 beech bark disease Nectria coccinea Mortality in a stand affected by beech bark disease.
5048087 beech bark disease Nectria coccinea Cryptococcus fagisuga on American beech, with tarry spots.
5048082 beech bark disease Nectria coccinea Cryptococcus fagisuga on American beech. A small canker was found under a tarry spot, which was sampled for culturing.
5048085 beech bark disease Nectria coccinea Tarry spots on American beech affected with beech bark disease.
5048089 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5048092 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5048093 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5048094 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5048098 beech bark disease Nectria coccinea Tree mortality in a stand affected by beech bark disease.
5048099 beech bark disease Nectria coccinea Tarry spot with a small canker.
5048100 beech bark disease Nectria coccinea Multiple cankers on American beech affected by beech bark disease.
5049005 beech bark disease Nectria coccinea Beech snap, in a stand affected with beech bark disease.
5251060 beech bark disease Nectria coccinea Tarry spots and beech scale on American beech.
5251061 beech bark disease Nectria coccinea Tarry spots on American beech
1501016 pitch canker Fusarium subglutinans Pitch canker, aerial recon - slash pine
1501017 pitch canker Fusarium subglutinans Pitch canker, slash pine terminal
1473087 Nectria canker Nectria spp. external before removing thin outter bark; "Nectria-like" canker
1473088 Nectria canker Nectria spp. canker after removing the thin outter bark; compare to 1473087
1473075 Nectria canker Nectria spp.
5052048 Gliocladium roseum Gliocladium roseum
5052049 Gliocladium roseum Gliocladium roseum
5052050 Gliocladium roseum Gliocladium roseum
5052051 Gliocladium roseum Gliocladium roseum
5052052 Gliocladium roseum Gliocladium roseum
1473312 lobster mushroom Hypomyces lactifluorum August 25, 1965
1473273 mimosa wilt Fusarium oxysporum f.sp. perniciosum in old nursery; 7/15/1953
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
0014287 Fungal disease of bees Cordyceps spp. parasitized by the fungus Cordyceps, order Clavicipitales
5037096 Neonectria canker Neonectria galligena Sporocarps of one of the fungi involved in beech bark disease.
1507023 Nectria canker Nectria cinnabarina Nectria cinnabarina on live oak
1504027 Cylindrocladium root diseases Cylindrocladium spp. Root rot; Cylindrocladium sp.; black walnut; Edwards Nursery
1504093 Gibberella stalk rot Gibberella zeae Fusarium roseum on Potato Dextrose Agar (PDA)
1504094 Fusarium wilts, blights, rots and damping-off Fusarium spp. PCNB / Blotter paper; Fusarium sp.; slash pine seed
1504015 Cylindrocladium root diseases Cylindrocladium spp. Root rot; Cylindrocladium; black walnut
1501030 mimosa wilt Fusarium oxysporum f.sp. perniciosum Mimosa wilt, stem streak - survivor
1502064 Neonectria cankers Neonectria spp. Nectria canker on yellow poplar
1502066 Neonectria cankers Neonectria spp. Nectria canker; black walnut
1502081 Gibberella canker Gibberella baccata Fusarium lateritium canker; mulberry
1502082 Gibberella canker Gibberella baccata Fusarium lateritium canker; mulberry
1502063 Neonectria cankers Neonectria spp. Nectria canker on sassafras
1501021 pitch canker Fusarium subglutinans Pitch canker, slash pine terminals
1501022 pitch canker Fusarium subglutinans Pitch canker, slash pine terminals
1501025 pitch canker Fusarium subglutinans Pitch canker, slash pine terminals
1501026 pitch canker Fusarium subglutinans Pitch canker, slash pine terminals
1501010 pitch canker Fusarium subglutinans Pitch canker, sap flow
1501012 pitch canker Fusarium subglutinans Pitch canker, extreme stem sap flow
1501014 pitch canker Fusarium subglutinans Pitch canker incidence (red flags), slash pine
1501015 pitch canker Fusarium subglutinans Pitch canker, Slash pine terminal
1501011 pitch canker Fusarium subglutinans Pitch canker, slash pine terminal
5030044 Neonectria canker Neonectria galligena Sporocarps of one of the fungi that are involved in beech bark disease.
3037024 Neonectria cankers Neonectria spp. Perennial target canker
3036077 wood rot fungi Trichoderma spp. Trichoderma sp. on stump
3036032 Verticillium wilt Verticillium albo atrum vascular streaking
3036029 Verticillium wilt Verticillium albo atrum vascular streaking - maple
3036021 mimosa wilt Fusarium oxysporum f.sp. perniciosum bleeding canker
3036030 mimosa wilt Fusarium oxysporum f.sp. perniciosum leaf symptoms
3036031 mimosa wilt Fusarium oxysporum f.sp. perniciosum vascular streaking
0590024 Cylindrocladium root diseases Cylindrocladium spp. Cylindrocladium on sweetgum
0590023 Fusarium wilts, blights, rots and damping-off Fusarium spp. Fusarium canker on yellow poplar, with bark removed
3035095 pitch canker Fusarium subglutinans test seedlings ath the pitch canker screening center
3035096 pitch canker Fusarium subglutinans infected tree
3035098 pitch canker Fusarium subglutinans infected pines
3035099 pitch canker Fusarium subglutinans infected pine
3035093 pitch canker Fusarium subglutinans pitch canker infected pine
3035097 pitch canker Fusarium subglutinans pine seedlings-needles just emerging from pitch canker on seed coat Bent Creek, NC
5039043 Nectria canker Nectria galligena perithecia
5056023 Nectria canker Nectria spp.
5045066 beech bark disease Nectria coccinea
5039044 Neonectria canker Neonectria galligena perithecia
5039045 Neonectria canker Neonectria galligena perithecia
5045067 Neonectria canker Neonectria galligena perithecia
5045068 Neonectria canker Neonectria galligena spores
5056030 Neonectria canker Neonectria galligena asci
5056031 Neonectria canker Neonectria galligena perithecia
5056017 Nectria canker Nectria spp.
5056018 Nectria canker Nectria spp.
5056016 Nectria canker Nectria spp.
5030040 Nectria canker Nectria spp.
5056025 Nectria canker Nectria spp.
5056026 Nectria canker Nectria spp.
5056027 Nectria canker Nectria spp.
5056019 Nectria canker Nectria spp.
5056020 Nectria canker Nectria spp.
5056021 Nectria canker Nectria spp.
5056022 Nectria canker Nectria spp.
5056024 Nectria canker Nectria spp.
5042087 Nectria canker Nectria spp. birch bark disease
5032044 Verticillium wilts Verticillium spp.
5032045 Verticillium wilts Verticillium spp.
5037026 Verticillium wilts Verticillium spp.
5034093 Nectria canker Nectria spp.
5056012 Nectria canker Nectria spp.
5056014 Nectria canker Nectria spp.
5056015 Nectria canker Nectria spp.
1467026 Nectria canker Nectria spp. sporodochia
1468230 Fusarium wilts, blights, rots and damping-off Fusarium spp.
1396151 beech bark disease Nectria coccinea
1396149 Nectria canker Nectria spp.
1406129 beech bark disease Nectria coccinea
1442112 Fusarium wilts, blights, rots and damping-off Fusarium spp. Fading foliage symptoms
2251099 Verticillium wilt Verticillium albo atrum crown with wilt symptoms
2250070 Fusarium cortical stem rot Fusarium avenaceum damping-off (left) and heat injury (right), forest nursery pest
2250074 Fusarium cortical stem rot Fusarium avenaceum post-emergence symptoms, nursery pest
2250077 Fusarium cortical stem rot Fusarium avenaceum post-emergence symptoms, nursery pest
2250078 Fusarium wilts, blights, rots and damping-off Fusarium spp. infected seedlings, nursery pest
2250023 canker and die back of Siberian Elm Tubercularia ulmea on Siberian elm
0590016 Neonectria cankers Neonectria spp.
0590032 Neonectria cankers Neonectria spp.
0590007 Neonectria canker Neonectria galligena
0355034 mimosa wilt Fusarium oxysporum f.sp. perniciosum discoloration in stumps
0355035 mimosa wilt Fusarium oxysporum f.sp. perniciosum wilt symptoms
0364078 Cylindrocladium root diseases Cylindrocladium spp. infected nursery beds
0364070 pitch canker Fusarium subglutinans stem canker
0355037 Verticillium wilts Verticillium spp. streaking on maple branch with bark removed

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