Abstract
Symptoms were observed on 35 out of 74 plant species, in 15 families inoculated with clover phyllody by the aster leafhopper (Macrosteles fascifrons (Stal)). Symptomatology for some of the hosts is described and illustrated. There were differences in numbers of plants infected, length of time for symptom development, and numbers of insects surviving on the various species of plants, but these were not correlated. Although the clover phyllody agent was transmitted to asters from 17 of 19 infected plant species the number of leafhoppers that became inoculative varied considerably depending on the source plant species.
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