Electron microscopy of twoPelargonium viruses

Summary Samples ofPelargonium zonale with different virus symptoms were collected from several gardens in Madrid. Inoculation to test plants and electron microscopy of the samples were made.2 viruses were isolate from the samples; by symptomatology, size of the virus particles, and distribution of the virions in the host cells, one of them (P₁) was identified withPelargonium leaf curl and the other (P₂) seems to be a previously undescribed virus. The virus P₂ forms crystalline inclusions composed of virus particles in the vacuoles of the infected cells.