西蜀海棠 xi shu hai tang

Pyrus prattii Hemsley, Bull. Misc. Inform. Kew 1895: 16. 1895; Docyniopsis prattii (Hemsley) Koidzumi.

Trees to 10 m tall. Branchlets dark red or purplish brown when old, short, robust, pubescent when young, glabrous when old; buds purplish brown, ovoid; scales pubescent at margin. Stipules linear-lanceolate, 1–1.3 cm, membranous, glabrous or subglabrous, margin sparsely glandular denticulate, apex acuminate; petiole 1.5–3 cm, sparsely pubescent or subglabrous; leaf blade ovate, elliptic, or narrowly elliptic-ovate, 6–15 × 3.5–7.5 cm, both surfaces puberulous when young, glabrescent, abaxially sparsely puberulous or glabrous when old, base rounded, margin serrulate, apex acuminate. Corymb umbel-like, 5–9 cm in diam. 5–12-flowered; bracts caducous, linear-lanceolate, membranous, margin entire, apex acuminate. Pedicel 1.5–3 cm, sparsely pubescent. Flowers 1.5–2 cm in diam. Hypanthium campanulate, abaxially densely pubescent when young, glabrescent. Sepals triangular-ovate, 4–5 mm, slightly longer than or ca. as long as hypanthium, abaxially subglabrous, adaxially tomentose, margin entire, apex acuminate or caudate-acuminate. Petals white, suborbicular, 0.8–1 cm, base shortly clawed, apex rounded. Stamens 20, unequal, slightly shorter than petals. Ovary (4- or)5-loculed, with 2 ovules per locule; styles (4 or)5, nearly as long as stamens, glabrous basally. Pome red or yellow, ovoid or subglobose, 1–1.5 cm in diam.; fruiting pedicel 2.5–3 cm, glabrous; sepals persistent. Fl. Jun, fr. Aug. 2n = 34*.

Mixed forests on slopes; 1400--3500 m. W Sichuan, NW Yunnan.