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

28. Cotoneaster gracilis Rehder & E. H. Wilson in Sargent, Pl. Wilson. 1: 167. 1912.

细弱栒子 xi ruo xun zi

Shrubs deciduous, 1–3 m tall. First year branches glabrous; branchlets brownish red to grayish brown, terete, slender, initially densely tomentose-villous, gradually glabrescent. Petiole 2–3 mm, white tomentose; stipules caducous, subulate, 2–4 mm, membranous, pubescent; leaf blade ovate to oblong-ovate, 2–3.5 × 1–2 cm, lateral veins 3 or 4 pairs, conspicuously raised abaxially and impressed adaxially, abaxially densely white tomentose, adaxially glabrous or puberulous, base rounded, apex obtuse or acute, rarely emarginate. Corymbs (1–)1.5–2.5 cm, 3–7-flowered; rachis and pedicels pilose; bracts linear, 2–3 mm, pilose. Pedicel 3–6 mm. Flowers 6–7 mm in diam. Hypanthium red, campanulate, abaxially glabrous. Sepals triangular-ovate, 1–2 mm, apex obtuse or ± acute. Petals erect, pink, suborbicular, 2.5–3.5 mm in diam., glabrous, shortly clawed. Stamens 20, slightly shorter than petals. Ovary pubescent apically; styles usually 2, free, not exceeding stamens. Fruit red, obovoid, 5–6 mm in diam., puberulous, pyrenes usually 2. Fl. May–Jun, fr. Aug–Sep.

Mountain regions, slopes, river banks, thickets; 1000--3000 m. Gansu, Henan, Hubei, Shaanxi, Sichuan.

1 Leaf blade ovate to oblong-ovate, 20–35 × 10–20 mm, densely tomentose abaxially; inflorescences 3–7-flowered.   28a var. gracilis
+ Leaf blade ovate-elliptic to broadly elliptic, 7–14 × 5.5–8 mm, tenuously tomentose abaxially; inflorescences 1–3(–6)-flowered.   28b var. difficilis

Lower Taxa


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