Detection and Identification of <i>Botrytis</i> Species Associated with Neck Rot, Scape Blight, and Umbel Blight of Onion

Fig. 2. Brown stain, also known as coffee stain, on the outer dry scales of an onion bulb caused by Botrytis cinerea (photo courtesy of Field Fresh Tasmania, Australia).



Image from Plant Health Progress article:
Detection and Identification of Botrytis Species Associated with Neck Rot, Scape Blight, and Umbel Blight of Onion