Ustilaginales

plural noun
Us·​ti·​lag·​i·​na·​les

Definition of Ustilaginales 

: an order of parasitic basidiomycetous fungi that cause smuts of various plants and especially of cereal grasses and have a complex life cycle which may include conidia production and in which sessile haploid basidiospores ultimately yield thick-walled dark-colored chlamydospores which typically replace the ovaries of an infected plant in a smutty mass and germinate with a meiosis to form a promycelium and begin a new basidial generation — compare uredinales , ustilago — see tilletiaceae

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History and Etymology for Ustilaginales

New Latin, from Ustilagin-, Ustilago + -ales

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