13. Cryptocarya hainanensis Merrill, Philipp. J. Sci. 21: 343. 1922.
海南厚壳桂 hai nan hou ke gui
Cryptocarya rolletii H. Wang & H. Zhu.
Trees, up to 20 m tall. Old branchlets chestnut-colored or blackish, finely striate, lenticellate and glabrous; young branchlets slender, finely striate, pubescent or glabrate on lower part. Leaves alternate; petiole robust, 5-8 mm, plano-convex, puberulent initially but soon glabrate; leaf blade greenish abaxially, olive-green adaxially when dry, lanceolate to oblong-lanceolate, 9-13 × 2.5-4.5 cm, thinly leathery, puberulent along midrib adaxially and glabrous abaxially when young but glabrous on both surfaces when mature, midrib and lateral veins conspicuously elevated abaxially, always slightly impressed adaxially, lateral veins 5 or 6 pairs, arcuate-ascendant, veins and veinlets slender, reticulate, dense and foveolate, base broadly cuneate, apex acuminate. Panicles spikelike, axillary and terminal, 3-8 mm, densely yellowish brown tomentulose, few flowered, branched; branches slender, up to 2.5 cm; peduncles 0.5-2 cm; bracts and bracteoles lanceolate-linear, ca. 1 mm, densely yellowish brown tomentulose. Pedicels less than 1 mm. Flowers ca. 2.5 mm. Perianth tomentulose outside and inside; perianth tube obconical; perianth lobes almost as long as tube, broadly ovate, acute. Fertile stamens 9, less than 1 mm; filaments villous, those of 3rd whorl each with 2 stalked triangular-ovate glands at base, others glandless; anthers 2-celled; cells of 1st and 2nd whorls introrse, those of 3rd whorl extrorse. Staminodes sagittate-deltoid, stalked. Ovary ovoid, ca. 0.7 mm; style slender, ca. 0.7 mm; stigma capitate. Fruit shiny, ovoid, 2.5-3 × 1.5-2 cm, wrinkled, papillate, black when mature, inconspicuously angled, slightly apiculate at apex, attenuate into a short stalk at base. Fl. Apr, fr. Aug-Jan of next year.
Evergreen broad-leaved forests, forested valleys; 500-700 m. S Guangxi, Hainan, S Yunnan [Vietnam].