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Ornamentals: Trees

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Image Subject Name Scientific Name Description
5492322 Rhizosphaera needle cast Rhizosphaera spp. Fruiting bodies developing from stomates on a spruce needle
5492336 Rhizosphaera needle cast Rhizosphaera spp. Rhizosphaera pycnidia on spruce
5492338 Rhizosphaera needle cast Rhizosphaera spp. Close-up view of Rhizosphaera fruiting bodies developing from stomates on a spruce needle. White caps of wax and colorless masses of spores visible on top of pycnidia.
5484085 brown spot needle blight of pine Mycosphaerella dearnessii Fruiting bodies on Easter white pine needle.
5484086 brown spot needle blight of pine Mycosphaerella dearnessii Olive brown spores.
5492339 Stigmina leaf spot Stigmina lautii dark fruiting bodies developing from stomates on a blue spruce needle
5492337 Rhizosphaera needle cast Rhizosphaera spp. Pycnidia of a Rhizosphaera sp. on a spruce needle.
5458656 spruce needle rust Chrysomyxa weirii Individual Chrysomyxa weirii rust pustule swelling and splitting open on a blue spruce needle.
5458655 spruce needle rust Chrysomyxa weirii Chrysomyxa weirii spores
5457969 maple cankers Stegonsporium spp. Dark fruiting bodies emerging from blighted maple twig
5458657 spruce needle rust Chrysomyxa weirii Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles.
5458658 spruce needle rust Chrysomyxa weirii Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles.
5458659 spruce needle rust Chrysomyxa weirii Chrysomyxa weirii rust pustules on blue spruce needles showing the release of masses of infectious spores.
5458665 Ploioderma needle cast of pine Ploioderma lethale Eight mature ascospores
5457972 maple cankers Stegonsporium spp. dark spores
5457973 maple cankers Stegonsporium spp. fruiting body with mature spores
5458688 Stigmina leaf spot Stigmina lautii

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