Korea Flora: Deciduous shrub. Height 1m. Winter buds silvery. Leaf scars raised and semicircular or heart-shaped. Young branches glabrous and reddish-brown, with branch tips dying and remaining long. Leaves opposite, membranous, ovate or oblong-ovate, apex acute, base rounded or cuneate, without serrations, size 1.5-6cm × 1-3cm. Both surfaces glabrous, upper surface yellowish-green, lower surface grayish-green. Petiole 2mm long. Flowers bisexual, in racemes 2-15mm long with 7-15 flowers at the tips of young branches. Flowers yellow, calyx tube 7-8mm long, 4 sepals. 8 stamens arranged in 2 rows with yellow anthers, 1 pistil, ovary spoon-shaped with a stalk. Fruit and seed ovoid-oblong, narrowed at both ends, 5-6mm long, glabrous with a short stalk. 

Flowering early July to early August (early September in Ganghwa Island).

Fruiting early September to early October.

Distribution: Southern Honshu to Kyushu in Japan; near Ganghwa Island in Gyeonggi Province, Jindo in South Jeolla Province, Jinhae and Namhae in South Gyeongsang Province, Korea.

Taxonomic notes: The Japanese flora (Iwatsuki et al., 1999) currently uses the scientific name Diplomorpha trichotoma (Thunb.) Nakai, distinguishing between Wikstroemia and Diplomorpha. The former has berries that turn red when mature, while the latter has dry fruit-like structures that turn green when mature. There are no other clear distinctions mentioned currently. It seems to follow Hamaya's narrow species concept. The Flora of China uses Wikstroemia, which is followed here as well.