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FOC | Family List | FOC Vol. 9 | Rosaceae | Sorbus

62. Sorbus dunnii Rehder in Sargent, Pl. Wilson. 2: 273. 1915.

棕脉花楸 zhong mai hua qiu

Aria dunnii (Rehder) H. Ohashi & H. Iketani.

Trees small, 2–7 m tall. Branchlets brownish purple when young, brown or grayish brown when old, terete, yellow pubescent when young, glabrate, minutely lenticellate; buds ovoid, 5–8(–10) mm, apex acuminate; scales several, brown, glabrous. Leaves simple; petiole 1.5–2.5 cm, brown tomentose, gradually glabrescent; leaf blade elliptic or oblong, 6–10(–15) × 3–5(–8) cm, lateral veins (10–)14–18 pairs, terminating in marginal teeth, abaxially densely yellowish white tomentose and brown tomentose along veins, adaxially glabrous but brown tomentose along veins, base broadly cuneate, margin irregularly serrate, apex acute or shortly acuminate. Compound corymbs much branched in distal part, 4–7 × 5–7 cm, densely flowered; rachis and pedicels rusty brown tomentose, gradually glabrescent, with many small lenticels. Pedicel 3–6 mm. Flowers 7–10 mm. Hypanthium turbinate, abaxially densely rusty brown tomentose. Sepals triangular-ovate, 1.5–2 mm, apex acute. Petals white, broadly ovate, 3–4 mm, glabrous, base shortly clawed, apex ± acute. Stamens 20, unequal in length, longer ones longer than petals. Styles 2, connate at base, glabrous. Fruit red, subglobose, 5–8 mm in diam., 2-loculed, without or with few small lenticels; seeds blackish, lanceolate-obovate, 3–4 mm. Fl. Apr–May, fr. Aug–Sep.

Sparse woods on slopes, shrubby thickets in valleys; 600--3000 m. SE Anhui, NW Fujian, NE Guangxi, SE Guizhou, NW Yunnan, W Zhejiang.


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