Japanese name: ミネカエデ（峰楓） Scientific name:Acer tschonoskii
[Overview]
A deciduous small tree 1–5 m tall, found at forest edges from the mountains to the subalpine zone.
Leaves are opposite, 3.5–10 cm long and 5.5–11 cm wide, palmately divided into 5–7 lobes; the lobes are further shallowly pinnately cut, and the margin has double serration.
During flowering, reddish-brown curled hairs grow on the veins on the underside of the leaf.
The petiole is slightly shorter than the leaf, 2–5 cm long, and tinged with red.
The leaves turn red in autumn.
Racemes 2–5 cm long emerge at the branch tips, bearing 5–10 flowers.
The nodes of the inflorescence have brown hairs.
The plant is dioecious or monoecious.
The flowers have 5 sepals and 5 petals.
The petals are yellowish green, sometimes tinged with purple.
The fruits are about 2–3 cm long and borne in pairs, each with a propeller-like wing, spreading at an obtuse to acute angle.
[Cultivation]
Propagate from seed or cuttings.
It prefers a well-drained place in partial shade to full sun.
Partial shade is better, especially while the tree is young.
In shade, the autumn color develops poorly.
Longhorn beetles and aphids cause damage, so kill them as soon as they are found.
