stem rust

noun

Definition of stem rust

  1. 1 :  a rust attacking the stem of a plant; especially :  a destructive disease especially of wheat caused by a rust fungus (Puccinia graminis) which produces reddish-brown lesions in the uredospore stage and black lesions in the teliospore stage and has any of several plants of the barberry family as an intermediate host

  2. 2 :  the fungus causing stem rust

First Known Use of stem rust

1899


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