chocolate spot
noun
mass noun
1- a fungal disease affecting field and broad beans, characterized by dark brown spots on all parts of the plant赤斑病。
1.1
- This is caused by the fungus Botrytis fabae (sometimes the grey mould B. cinerea), subdivision Deuteromycotina (or Ascomycotina).由蚕豆灰霉菌（有时为灰葡萄孢霉）引起, 半知菌（或子囊菌）亚门。