New Disease ofPellioniaandPileaspp. Caused byXanthomonas campestris

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Abstract
Since about 1975, a bacterial disease of Pilea [cadieri] and Pellionia spp. [P. daveauana, P. pulchra] caused by a species of Xanthomonas has increased in severity in Florida [USA]. Cross-inoculations with strains from these two genera as well as several pathovars of Xanthomonas campestris from other foliage plant hosts showed that the new pathogen was pathogenic only on species of Pilea and pellionia tested. The bacterium conformed to the physiological and biochemical characteristics of X. campestris.

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