Pterocarya fraxinifolia - Caucasian wingnut
Pterocarya fraxinifolia is commonly known as the Caucasian wingnut or Caucasian walnut. It is native to the Caucasian Region, Armenia, Azerbaijan, Georgia, Iran, Russia, Ukraine and Turkey.
It was introduced to France in 1784, and to Great Britain after 1800.
It is deciduous and monoecious (male and female flowers on the same tree) and grows to 30 m tall. The short, thick bole (trunk) is deeply furrowed with bark and supports wide spreading branches to form an attractive rounded form. The light green, alternate, pinnate leaves can exceed 60 cm in length, comprising 7 - 27 sessile leaflets.
The greenish flowers appear in spring, the male catkins thick and green, 7.5 – 12.5 cm long, and females longer with less dense flowers, bearing red styles. Lovely and interesting fruiting catkins, 30 – 50 cm long, hang in great numbers along the branches creating an unusually attractive effect with many green, semi-circular winged, nuts approximately 1.8 cm wide.
It is fast growing and grows best on flat ground or shallow slopes near river banks and in deep moist soils similar to its native habitat.
The climate associated with the distribution of this tree includes mild winters and mild humid summers. However it will withstand colder climates quite easily. It generally grows in mixed stands with other species and rarely grows in pure stands.
Pterocarya, a genus of 8-10 species, often called wingnuts in English, are trees in the walnut family Juglandaceae. They are native to Asia. The botanic name is from Ancient Greek pteron meaning "wing" and karyon meaning "nut".
Pterocarya are deciduous trees, 10–40 m tall, with pinnate leaves 20–45 cm long with 11–25 leaflets. The shoots have chambered pith, a character shared with the walnuts (Juglans) but not the hickories (Carya) in the same family.
In all species the flowers are monoecious, in drooping or hanging catkins. Male and female flowers on the same tree. The seed catkins when mature (about six months after pollination) are pendulous, 15–45 cm long, with 20–80 seeds (wingnuts) strung along them.
The seeds are a small nut 5–10 mm across, with two wings, one each side. In some of the species, the wings are short (5–10 mm) and broad (5–10 mm), in others longer (10–25 mm) and narrower (2–5 mm).
For many more images go to this Pinterest Page Pterocarpus fraxinifolia
It was introduced to France in 1784, and to Great Britain after 1800.
It is deciduous and monoecious (male and female flowers on the same tree) and grows to 30 m tall. The short, thick bole (trunk) is deeply furrowed with bark and supports wide spreading branches to form an attractive rounded form. The light green, alternate, pinnate leaves can exceed 60 cm in length, comprising 7 - 27 sessile leaflets.
The greenish flowers appear in spring, the male catkins thick and green, 7.5 – 12.5 cm long, and females longer with less dense flowers, bearing red styles. Lovely and interesting fruiting catkins, 30 – 50 cm long, hang in great numbers along the branches creating an unusually attractive effect with many green, semi-circular winged, nuts approximately 1.8 cm wide.
It is fast growing and grows best on flat ground or shallow slopes near river banks and in deep moist soils similar to its native habitat.
The climate associated with the distribution of this tree includes mild winters and mild humid summers. However it will withstand colder climates quite easily. It generally grows in mixed stands with other species and rarely grows in pure stands.
Pterocarya, a genus of 8-10 species, often called wingnuts in English, are trees in the walnut family Juglandaceae. They are native to Asia. The botanic name is from Ancient Greek pteron meaning "wing" and karyon meaning "nut".
Pterocarya are deciduous trees, 10–40 m tall, with pinnate leaves 20–45 cm long with 11–25 leaflets. The shoots have chambered pith, a character shared with the walnuts (Juglans) but not the hickories (Carya) in the same family.
In all species the flowers are monoecious, in drooping or hanging catkins. Male and female flowers on the same tree. The seed catkins when mature (about six months after pollination) are pendulous, 15–45 cm long, with 20–80 seeds (wingnuts) strung along them.
The seeds are a small nut 5–10 mm across, with two wings, one each side. In some of the species, the wings are short (5–10 mm) and broad (5–10 mm), in others longer (10–25 mm) and narrower (2–5 mm).
For many more images go to this Pinterest Page Pterocarpus fraxinifolia