| Something I found on the internet:
Cymbidium mosaic virus - CyMV
The CyMV belongs to the potex virus group, ORV to the tobamovirus group. Viroses are clearly visible, especially on younger leaves, by small or wide spots and often of a brighter tissue. On Phalaenopsis, after ripening of the leaf, these bright areas change to sunken black spots, in the beginning mainly on the undersides of the leaves, later also on the leaf surface. In cases of severe infestation, the infested leaves drop off. On blossoms of dark-coloured varieties, marked deformation and stripes or spotted areas are indicators of an infection with the Cymbidium mosaic virus, but similar colour changes also happen due to mutations, mainly in dark Phalaenopsis varieties. Symptoms on blossoms are relatively rare on Phalaenopsis.
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