59. Sorbus keissleri (C. K. Schneider) Rehder in Sargent, Pl. Wilson. 2: 269. 1915.
毛序花楸 mao xu hua qiu
Micromeles keissleri C. K. Schneider, Ill. Handb. Laubholzk. 1: 701. 1906; Aria keissleri (C. K. Schneider) H. Ohashi & H. Iketani; M. decaisneana C. K. Schneider var. keissleri C. K. Schneider; Pyrus keissleri H. Léveillé.
Trees or shrubs, 7–15 m tall. Branchlets grayish brown to blackish brown when old, terete, initially grayish white tomentose, soon glabrate, prominently small lenticellate; buds ovoid, apex ± acute; scales several, brown, glabrous. Leaves simple; petiole ca. 5 mm, gray tomentose when young, gradually glabrescent; leaf blade pale green abaxially, green adaxially, obovate or oblong-obovate, 7–11 × 3.5–6 cm, lateral veins 8–10 pairs, branched and anastomosing toward margin, raised abaxially, adaxially lustrous, both surfaces tomentose when young, gradually glabrate or sparsely tomentulose only abaxially along midvein, base cuneate, margin crenulate, entire near base, apex shortly acuminate. Compound corymbs terminal, 4–5 cm in diam. and ca. as long, densely flowered; rachis and pedicels grayish white tomentose. Pedicel 2–5 mm. Flowers 7–9 mm in diam. Hypanthium campanulate, sparsely grayish white tomentose. Sepals triangular-ovate, glabrous, apex ± acute or ± obtuse. Petals white, broadly ovate or suborbicular, ca. 3 mm and ca. as broad, apex obtuse. Stamens 20, ca. as long as petals. Styles 2 or 3, somewhat not exceeding stamens, glabrous, connate basally. Fruit brownish green, ovoid or flattened orange-shaped, 9–10(–12) mm in diam., glabrous, 2- or 3-loculed, with few inconspicuous lenticels, with an annular scar. Fl. May–Jun, fr. Aug–Sep.
Dense forests; 1200--1900 m. Guangxi, Guizhou, W Hubei, Hunan, Jiangxi, E Sichuan, S Xizang, NE Yunnan.