21. Machilus gongshanensis H. W. Li, Acta Phytotax. Sin. 17(2): 48. 1979.
贡山润楠 gong shan run nan
Persea gongshanensis (H. W. Li) Kostermans.
Small to medium-sized trees, 3-10 m tall; trunk to 20 cm d.b.h. Bark dark brown. Branchlets brownish, longitudinally striate, glabrous. Terminal buds large, ovoid, to 8 mm; bud scales subrounded, wide, glabrous outside, ciliate. Leaves congested at apex of branchlet; petiole 1-2(-3) cm; leaf blade abaxially pale green or brownish, adaxially greenish, oblong to obovate-elliptic, (6-)9.5-20 × (1.5-)1.8-5.5 cm, leathery, glabrous on both surfaces, midrib abaxially elevated, adaxially concave, lateral veins 8-11(-16) pairs, conspicuous on both surfaces, veinlets somewhat conspicuous, base cuneate, apex acuminate, summit sharp. Cymose panicles arising from lower part of newly sprouted branchlet, (3.5-)5.5-8 cm, branched at upper part of peduncle; peduncle and pedicels somewhat compressed, glabrous. Pedicel 4-5 mm. Flowers yellowish. Perianth lobes oblong, subequal, glabrous outside, pubescent inside, ciliate. Stamens subequal; filaments pubescent at base, glands of 3rd series stipitate, sparsely pubescent at base. Ovary ovoid; style slender, curved. Fruit globose, 1.3-1.7 cm in diam.; fruiting pedicel slightly thickened. Fl. Apr-May, fr. Aug-Oct.
● Mountain slopes or valleys, mixed broad-leaved forests; 1600-2300 m. NW Yunnan.