Apium virus Y sea celery ("Apium prostratum"), cilantro ("Coriandrum sativum"), and bishop’s weed ("Ammi majus"). In Germany it has recently been found naturally infecting celeriac or celery root. All are members of the plant family "Apiaceae". Symptoms reported included mosaic, vein clearing or banding, necrotic/chlorotic line patterns and stunting. Some samples of parsley, celery and poison hemlock, that gave positive results in tests, however, were asymptomatic. In host range studies, the virus causes local lesions on "Chenopodium quinoa" and "C. amaraticolor" ("Amaranthaceae"). Apium virus Y "Apium virus Y" (ApVY) is a plant pathogenic virus in the genus "Potyvirus" and the virus family "Potyviridae".
Celery mosaic virus been identified in several weed species in the "Apiaceae" family, including poison hemlock ("Conium maculatum"), mock bishopweed ("Ptilimnium capillaceum") and wild cherry ("Apium leptophyllum"). A 2012 study demonstrated that plants from Solanaceae, Curcurbitacae, Chenopodiaceae, and Amaranthaceae, families, in addition to plants from the Apiaceae family, become infected when mechanically inoculated with purified CeMV. Plants in this study tested positive for the CeMV virus, and displayed similar symptoms to celery, but with reduced severity. There is some confusion in the literature as to whether CeMV can infect hosts in the family "Chenopodiaceae". In 2002, a paper reporting the results of a