Webster's Revised Unabridged Dictionary · 1913

Melanconiales

Melanconiales , noun, plural

[New Latin, from Melanconium, name of the typical genus, from Greek me`las black + {not transcribed} dust, in allusion to the dark spores.]

(Botany) 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.