| The dahlia stem and leaf stalks pictured on the right is also symptomatic of virus. It tested positive for Tomato Spotted Wilt Virus. The leaves on this plant looked normal. Brown streaks on stems or stem lesions are fairly common symptoms of Tomato Spotted Wilt (virus), but fungal organisms can also cause the same symptom. |
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| This leaf of CR Miller was mailed to the laboratories of Agdia. http://www.agdia.com. Initially, Agdia reported that these symptoms were not indicative of any known disease. They subsequently corrected their report to indicate that the plant tested positive for "Tobacco Streak Virus." |
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