John Bryan wrote - "It is to be noted that the plants did not show signs of virus, just the flower size and count diminished." This is rather like saying the patient didn't show signs of HIV infection, his CD4 cell count just plummeted; his viral load went through the roof, he got a bunch of opportunistic infections and suffered from Kaposi's sarcoma. If reduced flower size and count aren't classic signs of viral infection in plants then I don't know what is. Perhaps you mean that the lily didn't have a bunch of yellow streaks in the leaves? Thanks, John T Lonsdale PhD 407 Edgewood Drive, Exton, Pennsylvania 19341, USA Home: 610 594 9232 Cell: 484 678 9856 Fax: 801 327 1266 Visit "Edgewood" - The Lonsdale Garden at http://www.edgewoodgardens.net/ USDA Zone 6b