SINCE 1828
Puccinia
noun
Puc·cin·ia
| \ ˌpəkˈsinēə\
Definition of Puccinia
: a very large genus (the type of the family Pucciniaceae) that is sometimes separated into four genera and consists of heteroecious parasitic fungi having 2-celled teliospores whose pedicels do not gelatinize and aecia with a pseudoperidium and including many forms that are destructive to various economic plants — see wheat rust
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Merriam-Webster unabridged
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