noun
: a disease of roses caused by a fungus ( Cryptosporella umbrina ) and characterized by lesions that are initially purple, turn white, and finally become buff
noun
: a disease of roses caused by a fungus ( Cryptosporella umbrina ) and characterized by lesions that are initially purple, turn white, and finally become buff
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012