6. Cornus coreana Wangerin, Repert. Spec. Nov. Regni Veg. 6: 99. 1908.
朝鲜梾木 chao xian lai mu
Swida coreana (Wangerin) Soják.
Trees deciduous, to 20 m tall. Bark light brown, rectangularly splitting; young branches ± 4-angled, pubescent with short brown trichomes; old branches brown, glabrous. Leaves opposite; petiole 1.2–2 cm; leaf blade light green abaxially, narrowly elliptic to broadly ovate, 6–8 × 1.7–2.5(–4) cm, papery, abaxially with brown and grayish white short appressed trichomes, scabrous, veins 4 or 5, small veins reticulate, base rounded or broadly cuneate, rarely oblique, margin sometimes revolute, apex shortly acuminate. Corymbose cymes 3.5–5 cm wide, with short white and brown trichomes. Pedicels 2–3.2 mm. Flowers white, ca. 5.2 mm in diam. Calyx lobes unequal, lanceolate, 0.5–1.1 mm, longer than disk. Petals ligulate-lanceolate, ca. 4.2 × 1.4 mm. Stamens ca. 4.2 mm, equal to petals; anthers oblong. Style clavate, ca. 3 mm; stigma subcapitate, not broader than style. Fruit black at maturity, globose, ca. 5 mm in diam.; stones not seen. Fl. May–Jun, fr. Sep–Oct.
Forests; sea level to 300 m. Liaoning [Korea].
The specimens cited by Wangerin are very similar to Cornus walteri, except that C. walteri has larger flowers and darker bark. The status of C. coreana requires further evaluation.