阔叶杨桐 kuo ye yang tong

Trees 10-15 m tall. Young branches grayish brown, glabrous, lenticellate; current year branchlets yellowish brown pubescent. Petiole ca. 5 mm, densely yellowish brown pubescent; leaf blade oblong-elliptic to oblong, 13-20.5 × 4-6.5 cm, leathery, abaxially yellowish green and yellowish brown appressed pubescent particularly along midvein and near margin with trichomes persistent and projecting beyond margin, adaxially dark green and glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 25-30 on each side of midvein, secondary and reticulate veins raised on both surfaces, base broadly cuneate, margin entire and slightly reflexed, apex acuminate. Flowers axillary, solitary or paired. Pedicel 5-10 mm, thick, densely yellowish brown pubescent; bracteoles persistent, ovate, ca. 5 × 3 mm, outside appressed pubescent, apex abruptly acute. Sepals broadly ovate, 8-10 × 6-9 mm, outside yellowish brown sericeous, apex obtuse to rounded and mucronate. Petals white, obovate, 10-12 × 5-6 mm, outside yellowish sericeous along median portion, apex rounded. Stamens 30-35, 7-8 mm; filaments 2-3 mm, nearly distinct, glabrous; anthers linear-oblong, 3.5-4.5 mm, with filiform trichomes, connective exserted. Ovary ovoid, yellowish sericeous, 5(or 6)-loculed with many ovules per locule; style simple, ca. 8 mm, glabrous. Fruit globose, ca. 1.5 cm in diam., sericeous, 5(or 6)-loculed with many seeds per locule. Seeds blackish brown, shiny. Fl. Aug-Sep, fr. Nov-Dec.

● Forests on mountain slopes or along streams; 1300-1400 m. Yunnan (Gongshan).

This species is expected to be found in N Myanmar.