4. Sorbus amabilis Cheng ex T. T. Yü & K. C. Kuan, Acta Phytotax. Sin. 8: 224. 1963.
黄山花楸 huang shan hua qiu
Sorbus amabilis var. wuyishanensis Z. X. Yu.
Trees to 10 m tall. Branchlets brown when young, blackish gray when old, terete, brown pubescent when young, gradually glabrescent, with small lenticels; buds narrowly ovoid, 0.9–1.6 cm, apex acuminate; scales several, dark reddish brown, brown pubescent apically. Leaves imparipinnate, together with rachis 13–18 cm; petiolule 2.5–3.5(–5) cm; stipules caducous after anthesis, suborbicular, coarsely toothed; rachis adaxially shallowly sulcate, reddish brown pubescent when young, glabrescent; leaflets (4- or)5- or 6-paired, at intervals of 1–1.8 cm, terminal and basal leaflets usually smaller than middle one, blades dark green adaxially, oblong or oblong-lanceolate, 4–6.5 × 1.5–2 cm, abaxially reddish brown pubescent only along midvein, gradually glabrescent, subglabrous when mature, adaxially glabrous, base obliquely rounded, margin coarsely sharply serrate in apical 2/3, with 9–21 teeth per side, apex acuminate. Inflorescences terminal, 8–10 × 12–15 cm, many flowered; rachis and pedicels densely rusty pubescent, glabrescent and subglabrous in fruit, with numerous elliptic lenticels; bracts caducous, smaller than stipules. Pedicel 1–3 mm. Flowers 7–8 mm in diam. Hypanthium campanulate, abaxially glabrous or nearly so. Sepals triangular, 1–2 mm, abaxially glabrous, apex obtuse. Petals white, broadly ovate or suborbicular, 3–4 mm in diam., adaxially puberulous or glabrous, apex obtuse. Stamens 20, shorter than petals. Styles 3 or 4, equalling or lower than stamens, densely pubescent basally. Fruit red, subglobose, 6–7 mm in diam.; sepals persistent. Fl. May, fr. Sep–Oct.
Mixed forests, mountain slopes; 900--2000 m. SE Anhui, NW Fujian, NE Hubei, N Jiangxi, NW Zhejiang.