10. Buxus rugulosa Hatusima, J. Dept. Agric. Kyushu Imp. Univ. 6: 303. 1942.
皱叶黄杨 zhou ye huang yang
Shrubs, 1-2 m tall; branchlets subterete; young branches tetragonous, 1-2 mm in diam., pubescent on 4 sides, or 2 opposite sides glabrous. Petiole 2-3 mm, densely puberulent; leaf blade leathery, elliptic, obovate-elliptic, rhomboid-oblong, oblong, or narrowly oblong, 0.8-2.5 × 0.5-1.2 cm, adaxially shining, puberulent along midrib, slightly pinnate-rugulose in dried state, base broadly cuneate or cuneate, margin revolute, apex obtuse, rounded, or retuse; abaxial midrib and lateral veins obscure. Inflorescences axillary and terminal, capitate; rachis 3-4 mm, puberulent; bracts ovate, 2.5-3 mm, puberulent. Male flowers 8-10; pedicels 0.5-1 mm; outer tepals ovate; inner tepals suborbicular, 2-3 mm, glabrous, reddish brown or light yellow in dried state; sterile pistil ca. 1 mm, apex inflated. Female flowers: tepals broadly ovate, 2.5-3 mm, abaxially pubescent; ovary ca. 3 mm; style thick, ca. 1.5 mm; stigma obcordate, decurrent to middle part of style. Capsule ovoid-globose, 8-10 mm, glabrous; persistent style 2-3 mm.
● Mixed forests and forest margins on limestone, thickets on mountain slopes and on limestone; 1900-4000 m. SW and W Sichuan, E and SE Xizang, NW Yunnan.
