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Diseases - Stem and Leaf Rusts

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Image Subject Name Scientific Name Description
5486241 cedar-apple rust Gymnosporangium juniperi-virginianae Cedar apple rust gall and telial horns on juniper at Secrest Arboretum in Wooster Ohio
5490470 white pine blister rust Cronartium ribicola Vertical section of uredinia
5490469 white pine blister rust Cronartium ribicola Vertical section of uredinium
5490466 white pine blister rust Cronartium ribicola Base of telia with telial horns emerging
5490463 white pine blister rust Cronartium ribicola Pale brown telial horns growing from leaf underside. Bright yellow is from urediniospores.
5490462 white pine blister rust Cronartium ribicola Pale brown telial horns growing from leaf underside. Bright yellow is from urediniospores.
5486065 Mayapple rust Puccinia podophylli Telia on leaf.
5486066 Mayapple rust Puccinia podophylli Vertical section of telium.
5476511 rust Puccinia malvacearum Vertical section of telium showing teliospore production
5476509 rust Puccinia malvacearum Vertical section of telium with teliospore evident
5476508 rust Puccinia malvacearum Vertical section of telium
5476461 Japanese apple rust Gymnosporangium yamadae Peridial cells
5476460 Japanese apple rust Gymnosporangium yamadae Peridial cells
5476459 Japanese apple rust Gymnosporangium yamadae Aecia with conical peridia
5476457 Japanese apple rust Gymnosporangium yamadae Aecia with conical peridia
5476458 Japanese apple rust Gymnosporangium yamadae Aecia with conical peridia
5408107 cedar-apple rust Gymnosporangium juniperi-virginianae
5461160 rust Uromyces ari-triphylli Cross-section of aecium
5461161 rust Uromyces ari-triphylli Cross-section of aecium
5461162 rust Uromyces ari-triphylli Cross-section of aecium
5461163 rust Uromyces ari-triphylli Aeciospore production at floor of aecium, cross-section.
5461532 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5461534 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5461535 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on limb
5461536 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on limb
5461537 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on limb
5461531 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5461533 cedar-apple rust Gymnosporangium juniperi-virginianae Gelatinous fruiting bodies on trunk
5459248 rust Puccinia heucherae Telium cross-section with teliospore poking out
5459247 rust Puccinia heucherae Telium cross-section
5459246 rust Puccinia heucherae Telium cross-section
5458705 Japanese apple rust Gymnosporangium yamadae Close-up of surface of gall on Juniper.
5458706 Japanese apple rust Gymnosporangium yamadae Close view of the spore producing surface of a gall.
5458081 Japanese apple rust Gymnosporangium yamadae Aecia on the underside of a crabapple leaf.
1406257 cedar-apple rust Gymnosporangium juniperi-virginianae
1406001 pine needle rust Coleosporium asterum aecia
1406002 pine needle rust Coleosporium asterum aecia
0454039 chrysanthemum white rust Puccinia horiana Lower surface of Puccinia horiana-infected chrysanthemum leaf, showing buff pink teliosori.
1400124 cedar-apple rust Gymnosporangium juniperi-virginianae telial horns from galls on cedar, southeast Minnesota in spring following moist weather.
1377028 eastern pine gall rust Cronartium quercuum Several clustered galls
1396156 cedar-apple rust Gymnosporangium juniperi-virginianae
1406003 pine needle rust Coleosporium asterum aecia
5439130 Japanese apple rust Gymnosporangium yamadae telia
5439131 Japanese apple rust Gymnosporangium yamadae telia
5439132 Japanese apple rust Gymnosporangium yamadae telia
5439133 Japanese apple rust Gymnosporangium yamadae telia
5439134 Japanese apple rust Gymnosporangium yamadae telia
1396157 cedar-apple rust Gymnosporangium juniperi-virginianae
5432339 Japanese apple rust Gymnosporangium yamadae Telial gall of Japanese apple rust
5432340 Japanese apple rust Gymnosporangium yamadae Telial gall of Japanese apple rust
1301048 white pine blister rust Cronartium ribicola Aecial spore stage of white pine blister rust on main stem of a sapling.
1377009 cedar-apple rust Gymnosporangium juniperi-virginianae Telial stage
4823038 cedar-apple rust Gymnosporangium juniperi-virginianae Fresh telial horns produced on mature second-year galls during moist conditons in spring and early summer.
1406008 pine needle rust Coleosporium asterum telia growing on alternate host
1241732 limb rust Peridermium filamentosum Limb rust aecia sporulating on a Jeffrey pine limb.
1377027 eastern pine gall rust Cronartium quercuum A sporulating gall (the orange-yellow pustules are aecia)nearly girdling a jack pine branch.
1224003 cedar-apple rust Gymnosporangium juniperi-virginianae
1949021 cedar-apple rust Gymnosporangium juniperi-virginianae Aecial stage of Gymnosporangium juniperi-virginianae on apple fruit.
1949022 cedar-apple rust Gymnosporangium juniperi-virginianae Telia-producing gall (cedar apple) of Gymnosporangium juniperi-virginianae on the alternate host eastern red cedar (Juniperus virginiana).
0746048 fusiform rust Cronartium quercuum f.sp. fusiforme Telia of Cronartium quercuum f. sp. fusiforme on northern red oak (Quercus rubra).
1473059 coronado limb rust Cronartium arizonicum aecia on twig
0656051 sweet fern blister rust Cronartium comptoniae Stem of six-year-old Pinus radiata almost girdled by Cronartium comptoniae; the spore blisters have ruptured and most of the aeciospores are shed.
5366957 rust Gymnosporangium nidus-avis Close-up view of juniper broom rust (Gymnosporangium nidus-avis) on the foliage of a Rocky Mountain juniper.
1473058 limb rust Peridermium filamentosum aecia on twig
5028058 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028059 cedar-apple rust Gymnosporangium juniperi-virginianae Telial horns of the cedar-apple rust pathogen.
5028060 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028061 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028062 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028063 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028064 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028065 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
5028066 cedar-apple rust Gymnosporangium juniperi-virginianae Telial-stage horns of the cedar-apple rust pathogen.
3036005 western gall rust Endocronartium harknessii 5 yr old scots pine
3036006 eastern pine gall rust Cronartium quercuum Aecial stage of eastern gall rust on pine, VA
3036015 fusiform rust Cronartium quercuum f.sp. fusiforme fruiting gall on stem
3036017 eastern pine gall rust Cronartium quercuum Pycnial ooze on stem of pine
5047035 white pine blister rust Cronartium ribicola aecia
5047036 white pine blister rust Cronartium ribicola aecia
5043055 cedar-apple rust Gymnosporangium juniperi-virginianae
5043056 cedar-apple rust Gymnosporangium juniperi-virginianae
5043057 cedar-apple rust Gymnosporangium juniperi-virginianae
5043059 cedar-apple rust Gymnosporangium juniperi-virginianae
5043061 cedar-apple rust Gymnosporangium juniperi-virginianae
5043062 cedar-apple rust Gymnosporangium juniperi-virginianae
1241722 western gall rust Endocronartium harknessii Branch gall sporulating.
1396158 cedar-apple rust Gymnosporangium juniperi-virginianae
1400125 cedar-apple rust Gymnosporangium juniperi-virginianae Telial horns from galls on cedar, following moist spring weather in southeast Minnesota.
1406009 pine needle rust Coleosporium asterum uredia growing on alternate host
1406010 pine needle rust Coleosporium asterum telia growing on alternate host
1271005 white pine blister rust Cronartium ribicola Aecia on bole/truck. Mount Hood National Forest. Northern Oregon Cascades.
1247151 cedar-apple rust Gymnosporangium juniperi-virginianae
1247219 cedar-apple rust Gymnosporangium juniperi-virginianae
1241720 white pine blister rust Cronartium ribicola Spores are produced within the blisters.
4823039 cedar-apple rust Gymnosporangium juniperi-virginianae Inactive reddish-brown/dark brown second-year galls. Telia horns will develop during moist conditions in spring and early summer see image 4823038).
2251007 stalactiform blister rust Cronartium coleosporioides aecia

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