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    Foliage Diseases (4)

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Cornell University
Once called "the first American university" by educational historian Frederick Rudolph, Cornell University represents a distinctive mix of eminent scholarship and democratic ideals. Adding practical subjects to the classics and admitting qualified students regardless of nationality, race, social circumstance, gender, or religion was quite a departure when Cornell was founded in 1865. Read more…
Remove Filters: Peronosporales(X)
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Image Subject Name Scientific Name Description
5492327 Phytophthora blight Phytophthora capsici Phytophthora capsici infection of ripe zucchini fruit
5484090 late blight Phytophthora infestans Late blight symptom, leaf spot, view of upper and lower leaf surfaces.
5484091 late blight Phytophthora infestans late blight symptom on green fruit surface
5484092 late blight Phytophthora infestans Late blight internal symptom in green fruit
5492321 late blight Phytophthora infestans Cut surface exposing internal symptoms of tuber infected with Phytophthora infestans
5457957 late blight Phytophthora infestans Sporangia of Phytophthora infestans.
5457968 late blight Phytophthora infestans Sporangia of Phytophthora infestans.
5458686 downy mildew Peronospora sparsa Sporangia.
5458685 downy mildew Peronospora sparsa Sporangia.
5458715 downy mildew Plasmopara viburni Lesions on the underside of a leaf. Note how many individual lesions appear angular as lesions develop between small leaf veins.
5458716 downy mildew Plasmopara viburni Close view of adjacent lesions on the underside of a leaf. Sparser white growth is the least mature.
5458712 downy mildew Plasmopara viburni Close-up view of lesions on the underside of a leaf.
5458713 downy mildew Plasmopara viburni Fruiting bodies developing along a vein on the underside of the leaf.
5458714 downy mildew Plasmopara viburni Lesions on the upper surface of a leaf.
5458711 downy mildew Plasmopara viburni Lesions on the underside of a leaf.
5458079 basil downy mildew Peronospora belbahrii sporangia
5458086 basil downy mildew Peronospora belbahrii Masses of purplish sporangia on the undersurface of a leaf.
5458087 basil downy mildew Peronospora belbahrii Masses of purplish sporangia on the undersurface of a leaf.
5458091 basil downy mildew Peronospora belbahrii Heavy spore production on the undersurface of the leaf may look like dust or dirt on the tissue.
5458092 basil downy mildew Peronospora belbahrii A closer view of a lesion with dense sporulation that looks like a grayish-purple mold on the leaf.
5458080 basil downy mildew Peronospora belbahrii Sporangia

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