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

6. Sorbus esserteauiana Koehne in Sargent, Pl. Wilson. 1: 459. 1913.

麻叶花楸 ma ye hua qiu

Sorbus conradinae Koehne.

Shrubs or trees, 5–10(–14) m tall. Branchlets gray or brownish gray, terete, grayish white tomentose when young, gradually glabrescent, with minute lenticels; buds narrowly ovoid or oblong-ovoid, 0.8–1.2(–1.4) cm × 5–9 mm, apex acute to shortly acuminate; scales several, dark brown, grayish white tomentose. Leaves imparipinnate, together with rachis 15–26 cm; petiole 4–5 cm; stipules semiorbicular, 1–2 cm in diam., margin coarsely serrate; rachis shallowly sulcate adaxially, initially grayish white tomentose, with few remaining hairs when old; leaflets 5 or 6 pairs, at intervals of 2–3.5 cm, blades dark green adaxially, elliptic, oblong-elliptic, or oblong-lanceolate, 5–9 × 2–3 cm, basal ones smaller, lateral veins 12–16 pairs, arcuate-anastomosing, abaxially prominent and adaxially deeply impressed, abaxially persistently densely grayish white tomentose, adaxially glabrous, base rounded or obliquely cordate, margin sharply minutely serrate, 8–20-toothed per side, entire near base, apex acuminate. Inflorescences 7–12 × 10–18 cm, densely flowered; rachis and pedicels densely grayish white tomentose when young, glabrescent; bracts smaller than stipules. Pedicel 1–3 mm. Hypanthium campanulate, abaxially tomentose. Sepals triangular, 1.5–2.5 mm, sparsely tomentose or glabrous near apex, apex acute or ± obtuse. Petals white, ovate or suborbicular, 3–3.5 × 2.5–3 mm, glabrous, apex obtuse. Stamens 20, ca. as long as petals. Styles 3 or 4, not exceeding stamens, tomentose basally. Fruit red, globose, 5–7 mm in diam., pubescent when young, glabrous when mature; sepals persistent; seeds brownish, reniform, 2–3.5 mm. Fl. May–Jun, fr. Aug–Sep. 2n = 34*.

Mountain thickets, cliffs; 1700--3000 m. W Sichuan.


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