Description from Flora of China
Buxus harlandii Hance var. platyphylla C. K. Schneider; B. microphylla Siebold & Zuccarini var. platyphylla (C. K. Schneider) Handel-Mazzetti.
Shrubs, 3-4 m tall; branchlets terete; young branches tetragonous, pubescent or glabrescent. Petiole 1-2 mm; leaf blade usually spatulate, also narrowly ovate or obovate, widest in apical part, 20-40 × 8-18 mm, thinly leathery, adaxially green and shining, puberulent on basal half of midrib, abaxially glaucescent, base narrowly cuneate, apex rounded or obtuse, usually with retuse tip; midrib elevated, lateral veins visible on both surfaces or only adaxially. Inflorescence axillary, capitate, 5-6 mm, flowers dense; rachis ca. 2.5 mm; bracts ovate, glabrous abaxially or pubescent. Male flowers ca. 10; pedicels only ca. 0.4 mm; tepals ovate-orbicular, ca. 2.5 mm; stamens ca. 6 mm; sterile pistil with terete gynophore, apex inflated, ca. 2.5 mm, equal to tepals in length or slightly longer. Female flowers: outer tepals ca. 2 mm; inner tepals ca. 2.5 mm; ovary ca. 2 mm, glabrous; style ca. 1.5 mm, slightly compressed; stigma obcordate, decurrent to 1/3-1/2 of style. Capsule ovoid, ca. 5 mm; persistent style erect, 3-4 mm. Fl. Feb, fr. May-Aug.
● Forests in hilly areas, mountain slopes; 400-2700 m. Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Jiangxi, S Shaanxi, Sichuan, Yunnan, Zhejiang.