1. Cornus oblonga Wallich in Roxburgh, Fl. Ind. 1: 432. 1820.
长圆叶梾木 chang yuan ye lai mu
Trees evergreen, to 16 m tall. Bark grayish brown or blackish gray, smooth. Current year’s branches ± 4-angled, glabrous to densely pubescent; old branches with sparse rounded lenticels and semicircular leaf scars. Leaf blade narrowly elliptic, oblong-elliptic, or lanceolate-elliptic, 6–13 × 1.6–4 cm, veins 4 or 5(or 6), raised abaxially, base cuneate, margin slightly revolute, apex acute or caudate. Paniculate cymes terminal, 6–6.5 × 6–8 cm, pubescent with white or brown trichomes or trichomes of both colors intermixed. Flowers ca. 8 mm in diam., pedicellate. Calyx teeth 2–3 mm, taller than disk. Petals oblong, ca. 4 × 1.3 mm. Stamens longer than or subequaling petals; filaments ca. 5 mm. Style 2.5–2.8 mm. Fruit black at maturity, ellipsoid, 4–6 × 6–7 mm; stones ca. 6 × 3.8 mm, inconspicuously ribbed. Fl. Sep–Jan, fr. Apr–Jun.
Broad-leaved evergreen and mixed broad-leaved evergreen-deciduous forests, thickets; 800–3700 m. Guizhou, Hubei, Sichuan, Xizang, Yunnan [Bhutan, India, Kashmir, Myanmar, Nepal, Pakistan, Sikkim, Sri Lanka, Thailand, Vietnam].
The fruit is used as a source of industrial oil or medicinally as a replacement for “zao pi” (the flesh of the fruit of Cornus officinalis and C. chinensis). The bark contains essential oils and tannins and is used in folk remedies to treat arthritis and injuries.