Helleborus net necrosis virus
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Helleborus net necrosis virus (HeNNV) in hellebores (Helleborus spp.) has been detected for the first time in Japan. Infected… Expand Hellebores (Helleborus spp.) are widely grown in gardens for their winter and early spring flowers. They are extremely hardy and… Expand Symptoms of 'black death' were observed on Helleborus spp. in each of three independent nurseries from across the United States… Expand