维西花楸 wei xi hua qiu

Pyrus monbeigii Cardot, Notul. Syst. (Paris) 3: 352. 1918.

Trees to 10 m tall. Branchlets brownish gray, glabrous, with small lenticels; buds reddish, shortly ovoid, ca. 8 mm, densely light brown pubescent; scales reddish. Leaves imparipinnate, together with rachis 10–15 cm; petiole 2–3.5 cm; stipules usually persistent, large, margin serrate, rarely entire; rachis adaxially shallowly sulcate, somewhat winged, pubescent; leaflet blades 6–8(–10) pairs, terminal and basal ones slightly smaller than others, at intervals of 1–1.5 cm, green abaxially, dark green adaxially, oblong or elliptic-oblong, 2–4 × 0.9–1.2 cm, abaxially lustrous, pubescent along midvein and margin, adaxially puberulous when young, base broadly cuneate or subrounded, oblique on one side, margin serrate except at base, apex obtuse or ± acute. Corymbs compound, 4–8 cm in diam., densely flowered; rachis and pedicels pubescent; bracts similar to stipules, but smaller. Pedicel 2–4 mm. Flowers 8–10 mm in diam. Hypanthium campanulate, abaxially pubescent. Sepals triangular, 1–2 mm, apex ± obtuse or acute. Petals white, suborbicular, 3.5–5 × 3–4.5 mm, adaxially puberulous or glabrous, base shortly clawed. Stamens 20, ca. 1/2 as long as petals. Styles 4, nearly as long as stamens, glabrous, nearly free or connate at base. Fruit orangish red, ovoid, 6–8 mm in diam.; sepals persistent. Fl. May–Jun, fr. Aug–Sep. 2n = 34*.

Mixed forests, thickets on mountain slopes; 2500--3000 m. NW Yunnan.