Pterocarya rhoifolia at Bute Park

Pterocarya rhoifolia 0

Pterocarya rhoifolia
early April 2024

Pterocarya rhoifolia 1

Pterocarya rhoifolia
mid May 2024

Grid reference ST 17942 76547
Common name Japanese wingnut
Origin Japan
Deciduous Yes
Status Rare
Status GB Champion 2023
Missing tag 1835
Missing old tag 603
Planted by Malcolm Frazer
Height 23M November 2023
Girth 267cm January 2023
Reference 903

This tree is opposite the Castle West Gate on the south east corner of the park.

Pterocarya rhoifolia bark1

Pterocarya rhoifolia bark
early April 2024

Pterocarya rhoifolia catkin1

Pterocarya rhoifolia catkins & new leaves
early April 2024

Pterocarya rhoifolia leaf1

Pterocarya rhoifolia pinnate leaf
mid May 2024

Pterocarya rhoifolia flower1

Pterocarya rhoifolia flowers
mid May 2024

General tree description

Pterocarya rhoifolia is a large tree, 25 to 30 metres high, often with a broad crown. It has grey bark and pinnate leaves 20 to 30cm long. These have 11 to 21 finely toothed, elliptic leaflets, rounded at the base and pointed at the apex. The common leafstalk is rounded, not winged. The flowers are male and female catkins. Males are 6 to 8cm long and develop on second year wood. The females are on current shoots and develop into 20 to 30cm strings of winged nuts. The wings of the nut are horizontal (not angled) and the entire fruits are 2 to 2.5cm across. They ripen from October to December. In autumn the leaves turn bright yellow.