French Marigold (Tagetes patula): A New Experimental Host of Citrus Exocortis Viroid. M. E. N. Fonseca, CENARGEN/EMBRAPA, CP 02372 70849-970.. E. W. Kitajima, Universidade de Brasilia, 70919-970 Brasilia (DF), Brazil. Plant Dis. 77:953. Accepted for publication 5 January 1993. Copyright 1993 The American Phytopathological Society. DOI: 10.1094/PD-77-0953E.