Cronartium ribicola
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Cronartium ribicola is a species of rust fungus in the family Cronartiaceae that causes the disease white pine blister rust. Other names include: Rouille vésiculeuse du pin blanc, white pine Blasenros
Cronartium ribicola 1
On Pinus strobus (aecial host)
Leaf spots on the underside of a leaf on a Ribes species (telial host)
Forest decimated by Cronartium ribicola
Blackcurrant
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The blackcurrant, black currant or cassis is a deciduous shrub in the family Grossulariaceae grown for its edible berries. It is native to temperate parts of central and northern Europe and northern A
Cronartium ribicola
…to a small extent. Another form of control practiced in some areas is to diligently remove Ribes plants from any area near white pines, including the blackcurrant. Because the infection moves from currant plants, to pines, and back again, it cannot continue to exist without its secondary (telial) host. Although…
Ribes nigrum a 1
In mountains of Buryatia, Russia
Flowers
Close-up of berries