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

45. Sorbus cuspidata (Spach) Hedlund, Kongl. Svenska Vetenskapsakad. Handl. 35: 89. 1901.

白叶花楸 bai ye hua qiu

Crataegus cuspidata Spach, Hist. Veg. Phan. 2: 106. 1834; Pyrus crenata Lindley (1835), not D. Don (1825); P. vestita Wallich ex J. D. Hooker.

Shrubs 7–8 m tall. Branchlets purplish brown when young, grayish brown when old, grayish white tomentose when young, glabrous when old; buds ovoid, 0.7–1.4 cm, glabrous, apex acute; scales imbricate, several, brown. Leaves simple; petiole 1–2.5 cm, stout, white tomentose; stipules brownish, lanceolate, 0.8–1.2 cm, membranous, tomentulose; leaf blade elliptic, 12–22 × 7–12 cm, lateral veins 10–15 pairs, nearly parallel and terminating in marginal teeth, abaxially densely white tomentose, adaxially puberulent when young, glabrate, base rounded or broadly cuneate, margin unevenly serrate or doubly serrate, sometimes ± lobed, apex acute or ± obtuse, rarely shortly acuminate. Compound corymbs 5–8 × (5–)7–10 cm, 30–45-flowered; rachis and pedicels initially white tomentose, glabrescent. Pedicel 5–8 mm. Flowers 7–8 mm in diam. Hypanthium campanulate, abaxially white pubescent except at base. Sepals triangular or lanceolate, 2.5–3 × 1.5–2.5 mm, apex acute. Petals white, obovate, 6–8 × 4–6 mm, adaxially puberulent, base shortly clawed. Stamens 20–25, slightly shorter than petals; anthers purple. Styles 3–5, basally connate and tomentose. Fruit dark red, globose, 1.5–2 cm in diam., 3–5-loculed, with many conspicuous lenticels; sepals persistent; seeds brown, lanceolate, compressed, 7–8 × 3–4 mm. Fl. Jun–Jul, fr. Aug–Sep.

Forests on slopes, forest margins; 2000--3500 m. Xizang [?Bhutan, India, Myanmar, Nepal, Sikkim].

Records for Bhutan probably refer to Sorbus thibetica (Fl. Bhutan 1(3): 595. 1987).


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