腺叶杨桐 xian ye yang tong

Trees 10-20 m tall. Young branches grayish brown, glabrous; current year branchlets reddish brown, sparsely appressed pubescent when young but glabrescent; terminal buds ovate, gray to grayish yellow sericeous. Petiole 1.5-2 cm, glabrous or sparsely pubescent when young; leaf blade oblong-elliptic to elliptic, 9.5-14 × 3.5-5.5 cm, leathery, abaxially densely reddish brown glandular punctate, when dry abaxially pale yellowish green and adaxially yellowish green, both surfaces glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 11-13 on each side of midvein and raised on both surfaces when dry, base broadly cuneate to cuneate, margin serrulate, apex acuminate to abruptly shortly acuminate. Flowers axillary, solitary or to 3 in a cluster. Pedicel 1-1.5 cm, slightly recurved, sparsely pubescent; bracteoles caducous. Sepals oblong to oblong-ovate, 2-3.5 × 1.5-3 mm, outside sparsely appressed pubescent, margin ciliolate and some
times glandular, apex rounded and retuse with a mucronate tip. Petals white, broadly obovate to oblong-obovate, 8-11 × 6-7 mm, outside glabrous, apex rounded to emarginate. Stamens ca. 32, 4-6 mm; filaments 2-3.5 mm, basally almost distinct, apical 1/2 with dense filiform trichomes; anthers ca. 1.5 mm, with filiform trichomes, connective exserted for ca. l mm. Ovary ovoid, glabrous, 3-loculed with many ovules per locule; style 4-6 mm, completely united, glabrous. Immature fruit ovoid to globose, ca. 9 mm in diam., with 8 or 9 seeds per locule. Seeds brown, shiny. Fl. Aug-Sep, fr. Nov-Dec.

● Forests or thickets on mountain slopes; 1300-1700 m. Yunnan (Hekou, Malipo, Xichou).