Of a plant or plant part: affected with a disease or disorder causing reddish discoloration; spec. affected by a fungal rust (rust, n.1 6a); = rusted…

Of grain: Affected by smut.

Of corn: Affected by smut. Obsolete.

dialect. Of grain: Affected by smut or blight.

Having the appearance or form of smut.

Of grain: Affected by smut; blackened.

Of a plant or plant part: affected by the disease rust (rust, n.1 6a).

Of rye, etc.: Affected with ergot or spur.

Of grain: Affected by smut.

any of numerous plant diseases caused chiefly by fungi, characterized by dark spots on the foliage (frequently attributive); a spot on a leaf so…

(a) a stain produced by the excrement of an insect; also figurative; (b) a plant disease, esp. of apples and pears, caused by the fungus Leptothyrium…

Of wheat: see quot. 1892.

Of a fruit: = mummified, adj. 4.

Of a fruit: dried and shrivelled, esp. as a result of brown rot. Cf. mummy, n.1 6c.

affected by this fungus.

Any member of the genus Rhynchosporium of ascomycete fungi, the members of which cause leaf blotch diseases in cereals and other grasses; esp. R. se…

A genus of hyphomycetous fungi which cause various plant diseases; (also alternaria) a fungus of this genus. Frequently attributive: designating a…

Used attributively and absol. to designate a disease of banana plants caused by the fungus Cercospora musæ, characterized by the appearance on the…

A disease of flax, first reported from Argentina in 1911, caused by the fungus Mycosphaerella linorum, and characterized by circular brown or…

The name of a genus of parasitic fungi, used attributively and absol. to designate plant diseases caused by them.

a fatal wilt disease of oaks and certain other trees, found particularly in the eastern United States and caused by the fungus Ceratocystis fagacearum…

A disease of Prunus and other woody plants caused by the fungus Stereum purpureum, which is frequently associated with a silvery sheen of the leaves…

A leaf-spot disease of tobacco, caused by the bacterium Pseudomonas tabaci. Also attributive.