Hornbeam ( Carpinus )
The plant species of this subfamily occur in the temperate zones of the northern hemisphere .
They are single sexed ( monoecious ). The male inflorescences are pendulous catkins. The pollination is carried on the wind ( anemophily ). The female inflorescences are short and erect, but differ in structure depending on the genus. The female inflorescences have foliage leaf-like bracts (bracts), however, who Betuloideae woody inflorescences. The inflorescence is absent in male flowers, in female flowers it is sepal-like. The male flowers consist of only four to eight fertile stamens . The female flowers are two carpels an under constant ovary grown, with two styluses. Large nut fruits are usually formed as fruits .
In the subfamily of the hazelnut family (Coryloideae) there are four genera with a total of 45 to 50 species:
- Hornbeam ( Carpinus L. )
- Hazel ( Corylus L. )
- Hop beech ( Ostrya Scop. )
- Ostryopsis Decne. : With only three species exclusively native to China.
- The Corylaceae family at DELTA by L. Watson & MJDallwitz. (engl.)
- Description of the subfamily in APWebsite (Engl.)
- Brief description in the Flora of North America. (engl.)