Corylus maxima
| Filbert | |
|---|---|
| Filbert fruit, showing the elongated tubular involucre | |
| Scientific classification | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Rosids | 
| Order: | Fagales | 
| Family: | Betulaceae | 
| Genus: | Corylus | 
| Species: | C. maxima | 
| Binomial name | |
| Corylus maxima | |
| Synonyms | |
| 
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Corylus maxima, the filbert, is a species of hazel in the birch family Betulaceae, native to southeastern Europe and southwestern Asia.