Many years ago I sent in some bulbs to a lab in Sacramento to test them for virus. My experience proved that you can't tell for sure whether something that looks virused is virused. Some things I sent in that looked virused were and some were not. Some I sent in that didn't look virused were. Since most people don't wish to take the trouble to do this, it seems safer just to toss plants that are suspect even if you end up throwing out something that is suffering from nutrient deficiencies. But it is not so easy if the plant is symptomless. I sent in Sparaxis I had purchased because the petal variation made me worry, but I also sent in some that did not have those symptoms. They were all virused, even the ones that looked fine. Nathan thinks the plants shown on the wiki were likely misdiagnosed as virused but this is not so. It is possible that plants with petal variation can be virused. It makes it very challenging for the home gardener. Mary Sue