西藏含笑 xi zang han xiao

Magnolia kisopa (Buchanan-Hamilton ex Candolle) Figlar; Michelia doltsopa Buchanan-Hamilton ex Candolle subsp. kisopa (Buchanan-Hamilton ex Candolle) J. Li; Sampacca kisopa (Buchanan-Hamilton ex Candolle) Kuntze.

Trees, 20-40 m tall, to 45 cm d.b.h., with appressed trichomes. Twigs pale brown pubescent when young and blackish brown when old, glabrous, with scattered lenticels; buds narrowly ovoid, 8-10 mm, densely brown pubescent. Stipular scar reaching petiole apex. Petiole 1.5-3 cm; leaf blade elliptic, oblong, or narrowly ovate, 9-15 × 3-5 cm, leathery, abaxially brown pubescent when young but glabrous when old, adaxially glabrous, secondary veins 7-11 on each side of midvein, reticulate veins dense and prominent on both surfaces when dry, base cuneate to rounded, apex acute to shortly acuminate. Brachyblasts ca. 4 mm, pubescent. Tepals 9, yellow; 6 tepals of outer whorl obovate, 2-2.2 × 0.9-1 cm; 3 tepals of inner whorl nearly spoon-shaped, 1.8-1.9 × 0.6-0.8 cm. Stamens 1-1.4 cm; filaments 4-6 mm; connective exserted and forming a 3-4 mm tip; anthers 6-8 mm. Gynophore ca. 5 mm, pubescent; gynoecium cylindric, 8-10 mm, pubescent; carpels ca. 2 mm; ovaries ovoid, ca. 1.5 mm, densely pubescent; styles ca. 0.5 mm. Fruit 5-10 cm; mature carpels blackish brown, subglobose, ca. 1.3 cm in diam., scattered with white lenticels. Seeds red, broadly cordate, ca. 10 × 3-5 mm. Fl. Apr-May, fr. Sep-Oct. 2n = 38.

Forests, slopes; 1600-2400 m. S Xizang (Mêdog, Nyalam) [Bhutan, NE India, Nepal].