| common filbert | USDA PLANTS Symbol: COAV80 U.S. Nativity: Exotic Habit: Hardwood Trees Shrub or Subshrub |
| Corylus avellana L. |
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Taxonomic Rank: Magnoliopsida: Fagales: Betulaceae |
| Synonym(s): European hazel |
| Native Range: Europe (REHD, BAIL); temp. Asia & Europe (GRIN) |
| Selected Images from Invasive.org | View All Images at Invasive.org |
 Flower(s); Male inflorescence in February. Frequents broadleaved forests on lowlands and mountains. Height to 10 m. Poland Gil Wojciech, Polish Forest Research Institute, Bugwood.org Additional Resolutions & Image Usage |
 Diagram or Graphic; 1. Flowering shoot with male (a - c) catkins, bud-like female (d, e) inflorescences, and vegetative buds (k). - 2. Shoot with mature leaves and developed - yet green - male catkins (a, b) which will stay dormant through winter. - 3. Shoot with ripening fruit clusters surrounded by leafy involucre shorter than nut, and dissected into narrow toothed lobes. - 4. Nuts partially enclosed by incised involucres with lobes longer than nuts (cluster is shown without the leaf the axil of which it develops). - 5. Ripe nut seen from two sides (a, b) - 6. Winter-branchlet with dormant male catkins (m, n). After Hempel & Wilhelm, 1889. Photos and explanations from the book: Zelimir Borzan. "Tree and Shrub Names in Latin, Croatian, English, and German, with synonyms", University of Zagreb, 2001. Zelimir Borzan, University of Zagreb, Bugwood.org Additional Resolutions & Image Usage |
| EDDMapS Distribution: This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org |
 State(s) Where Reported invasive. Based on state level agency and organization lists of invasive plants from WeedUS database. |
| Invasive Listing Sources: |
| Native Plant Society of Oregon, 2002 |
