腰果楠 yao guo nan

Laurus incrassata Jack, Malayan Misc. 2(7): 33. 1822; Dehaasia lanyuensis (C. E. Chang) Kostermans; D. triandra Merrill; Endiandra lanyuensis C. E. Chang.

Trees, 7-15 m tall. Branchlets grayish, terete, striate, glabrous. Leaves alternate; petiole ca. 2.5 cm, concave-convex; leaf blade elliptic or ovate-oblong, 10-13 × 5-7 cm, thinly leathery, glabrous on both surfaces, midrib conspicuously elevated abaxially, slightly impressed adaxially, lateral veins 8-10 pairs, elevated on both surfaces, arcuate-ascendant, reticulate veins and veinlets conspicuous, base cuneate or broadly cuneate, apex acute. Panicle axillary, inserted on nearby apex of branchlet, glabrous, blackish when dry; peduncle ca. 7 cm. Pedicels slightly slender, ca. 3 mm; bracts small. Perianth tube campanulate; perianth lobes broadly ovate, ca. 1.2 × 1.4 mm, leathery, deciduous when in fruit, ciliolate on margin, acute at apex. Stamens adnate to perianth tube, those of 1st and 2nd whorls reduced to staminodes, spatulate, up to 1.1 mm, sparsely puberulent outside but densely tomentose on upper part inside, stamens of 3rd whorl fertile, ca. 1.3 mm, densely villous, each with 2 stalkless glands at base, anthers 2-celled, cells extrorse. Staminodes of innermost whorl subulate, densely tomentose. Ovary ovoid, partly immersed in perianth tube, ca. 1 mm, glabrous; style ca. 1.5 mm. Fruit oblong, ca. 4.5 × 2.5 cm, glabrous, blue-black when mature; fruit stalk dilated, red when mature. Seed large, with an orthotropous embryo. Fl. Feb-Mar, fr. May-Jun.

Thickets. S Taiwan (Lan Yu) [Indonesia, Malaysia, Philippines, Thailand].