Origins: Alps, Siberia
First finding in Slovenia: likely present for over 100 years
Pathways: spontaneous spread
Possible to identify: year-round
Habitat: Affects White pine species. Weymouth pine (Pinus strobus) is especially sensitive. It also affects currant-bushes, especially Black currant (Ribes nigrum).
Status in Slovenia: The importance of the disease is reduced since Weymouth pine is no longer planted. Black currant is infected throughout Slovenia.
Similar species: Other pine species including P. sylvestris, P. nigra, P. halepensis and P. mugo are affected by a similar fungus (Cronartium flaccidum) which causes the same symptoms. Only the host species differ.
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