Leaves spots

[Petr Zalesak]

Hello,
Could someone please help me to identify these spots at Cattleya leaves? They are at the bottom side and at the old ones only...
Thank you very much.

 

[gonewild]

Looks like virus.

 

[Jpari]

The pattern of black spots in both pictures look like virus to me. The pattern of spots in the second picture looks like classic
Odontoglossum ringspot virus. You may want to isolate this plant and certainly have it tested.

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