Japanese name: ヒロハタマミズキ(広葉玉水木) Scientific name:Ilex macrocarpa
A deciduous tree that grows in forests.
The plant is dioecious.
Second-year branches are reddish brown with conspicuous grayish white lenticels.
The leaves are simple and alternate, elliptic or ovate-elliptic, 6–12 cm long and 4–6 cm wide, with a sharply pointed tip and sharp teeth on the margin.
The petiole is 1–1.5 cm.
The leaf texture is somewhat thick and soft.
Flowers are borne in clusters mixed with leaves on short shoots of the previous year's branches.
Male inflorescences bear 4–15 flowers, and female inflorescences bear 1–8 flowers.
Sometimes inflorescences of 2–4 flowers are also borne in the leaf axils of new branches.
Both male and female flowers are white with 5–7 petals.
Male flowers are about 5 mm in diameter with ovate petals; female flowers are about 1 cm in diameter with oblong petals.
The fruit is spherical, about 1 cm in diameter, and ripens from red to blackish purple.
Each fruit contains 5–7 seeds, which are somewhat flattened, triangular-oblong, about 8 mm long, with three thin ridges running lengthwise on the back.