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n. pl.1.(Bot.) The smallest of the three orders of Fungi Imperfecti, including those with no asci nor pycnidia, but as a rule having the spores in cavities without special walls. They cause many of the plant diseases known as anthracnose.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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W3's definition is the highly informative: 'a form genus of imperfect fungi (order Melanconiales) having hyaline 2-celled spores'.
Hippodamia convergens (Coleoptera: Cooccinellidae) dissemination of dogwood anthracnose fungus (Melanconiales: Melanconeacac).