| Ring Spot | Comments | 
|---|---|
| RING SPOT: On Odontoglossums A virus disease caused by Tobacco Mosaic Virus -- Orchid Strain, one of the two viruses common in orchids; Odontoglossum ring-spot virus is the same thing. A73-818 | 0 | 
| RING SPOT: Virus Shows up on leaves of Dendrobium antennatum but produces no floral abnormalities; a bacilliform virus. A74-529 | 0 |