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

2. Sorbus sargentiana Koehne in Sargent, Pl. Wilson. 1: 461. 1913.

晚绣花楸 wan xiu hua qiu

Pyrus sargentiana (Koehne) Bean.

Trees 6–10 m tall. Branchlets grayish brown when young, dark gray when old, terete, grayish white tomentose, with numerous elliptic lenticels; buds narrowly ovoid, 1–1.7 cm, apex acute; scales many, brown, sparsely pubescent. Leaves imparipinnate, together with rachis 18–28 cm; petiole 5–6 cm; stipules persistent, semiorbicular, 1–2 cm in diam., margin sharply serrate; rachis adaxially shallowly sulcate, slightly winged, grayish white tomentose; leaflet blades 3–5 pairs, at intervals of 2.5–3.2 cm, terminal and basal leaflets smaller than others, elliptic-lanceolate, 7–13 × 2–4.2 cm, lateral veins 20–35 pairs, arcuate-anastomosing, abaxially initially densely tomentose, gradually glabrescent, with sparse hairs persisting only along veins, adaxially sparsely pubescent, glabrescent, base rounded or obliquely cordate, margin sharply serrate, with 28–52 teeth per side, entire on basal 1/4, apex acuminate, rarely acute. Inflorescences 8–11 × 9–15 cm, densely flowered; rachis and pedicels grayish white tomentose, gradually glabrescent, with oblong lenticels; bracts linear-lanceolate. Pedicel 1–3 mm. Flowers 5–7 mm in diam. Hypanthium campanulate, 1–1.4 mm, abaxially tomentose. Sepals triangular, 1–2(–2.5) mm, shorter than petals, apex acute or ± obtuse. Petals white, broadly ovate, 2.5–3.5 × 2–3 mm, glabrous, apex obtuse. Stamens ca. 20, shorter than petals. Styles 3 or 4(or 5), not exceeding stamens, grayish white tomentose basally. Fruit red, globose, 5–6 mm in diam.; sepals persistent, erect. Fl. May–Jun, fr. Oct–Nov. 2n = 34*.

Mixed forests, woodlands, sunny slopes; 2000--3200 m. SW Sichuan, NE Yunnan.


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