Description from Flora of China
Persea platycarpa (Chun) Kostermans.
Large trees, up to 24 m tall; trunk ca. 50 cm d.b.h. Bark yellowish gray, longitudinally striate, ca. 3 mm thick. Branchlets thick, with sparse tomentum and scattered lenticels. Terminal buds large, triangular-ovoid; outer bud scales covered with persistent tomentum. Petiole 3-4 cm, thick, with opaque tomentum; leaf blade oblong-ovate or oblong-oblanceolate, sometimes oblong-elliptic, larger one to 34 × 12 cm, smaller one 15-23 × 6-8 cm, leathery, abaxially ferruginous tomentose, adaxially brownish when dry and only lower part of midrib sometimes opaque tomentose, midrib abaxially elevated, adaxially concave, lateral veins 16-20 pairs, distant, veinlets abaxially distinct, especially along midrib and lateral veins, base broadly cuneate, margin slightly revolute, apex cuspidate-acuminate. Flowers not seen. Withered inflorescences racemose, terminal, ca. 8 cm, ferruginous tomentose, few flowered. Pedicel thick, ca. 8 × 2 mm. Perianth lobes leathery, oblong-elliptic or oblong-ovate, 8-9 × 4-5 mm, outer ones smaller. Stamens 5-6 mm; filaments slightly flattened, gradually wide and hairy toward base, those of 3rd series with ovoid glands ca. 2 mm. Ovary globose with yellowish hairs at base. Fruit compressed globose, ca. 2.2 cm, ca. 4 cm in diam. Fr. Apr-May.
W Guangdong, S Guangxi [Vietnam].