Division Corylus avellana L.
United Kingdom Repealed
- Time of leaf bud burst (when two leaves appear out of the bud)
- Time of male flowering
- Time of female flowering
- Involucre: length compared to fruit length
- Involucre: indentation
- Involucre: serration of indentations
- Fruit: size
- Fruit: shape
- Time of ripening
- Fruit: percentage of kernel (by weight)