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A New Disease of Epimedium Caused by Carnation Ringspot Virus

R. G. Kiambi, M. M. Baumann, and B. E. Lockhart

November 2018


Epimediums (Epimedium grandiflorum) are popular perennial groundcovers and are known to produce a wide range of medicinal effects. Extracts have long been used in traditional Chinese medicine. Carnation ringspot virus (CRSV) has a wide host range. In 2018, symptoms were observed on epimedium in three different landscape settings across St. Paul, MN. Leaf symptoms consisted of conspicuous mottling, chlorotic ringspots, and distortion of leaf margins. CRSV was confirmed by reverse transcription polymerase chain reaction. The CRSV host range now includes epimedium, which is the first species of the Berberidaceae family shown to be susceptible to CRSV. The potential risk of infection in other ornamental plant species in the family should be evaluated.


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