Urocystis cepulae
onion smut
onion mildew
Peronospora destructor
potato fungus
Pellicularia filamentosa
Rhizoctinia solani
black spot
stem blight
wood mint
tar spot
Sphacelotheca reiliana
onion smudge
black
head smut
flag smut fungus
Albuginaceae
blue mold fungus
Peronospora tabacina
harlequin bug
family Albuginaceae
Phytophthora infestans
Plasmodiophora brassicae
clubroot fungus
blackroot
leafspot
bunt
Tilletia caries
leaf spot
pinkroot
rhizoxin
black-seeded
smut
harlequin cabbage bug
mayapple rust
black bean
ergot
smutty
onion thrips
Claviceps purpurea
Thrips tobaci
verticillium
brown root rot fungus
Plasmodiophoraceae
family Plasmodiophoraceae
Thielavia basicola
onion louse
brown spot
genus Ustilaginoidea
Ustilaginoidea