First Report of Gray Mold Caused by Botrytis cinerea on Yellow Cosmos (Bidens sulphurea) in Brazil.

Bidens sulphurea (synonym Cosmos sulphureus) (Asteraceae), commonly known as yellow cosmos, is a native herbaceous species from Mexico that is widely used as an ornamental. It has been introduced in Brazil and has escaped from gardens, becoming a minor weed in ruderal, crop and pasture areas (2). In June 2010, groups of B.