12. Sorbus oligodonta (Cardot) Handel-Mazzetti, Vegetationsbild. 22 Heft. 8: 8. 1932.
少齿花楸 shao chi hua qiu
Pyrus oligodonta Cardot, Notul. Syst. (Paris) 3: 351. 1918; P. glabrescens Cardot; Sorbus glabrescens (Cardot) Handel-Mazzetti.
Trees to 5–15 m tall. Branchlets reddish brown to grayish brown, terete, with scattered small lenticels, glabrous; buds oblong-ovoid, 7–12 mm, apex acute; scales several, reddish brown, glabrous, rarely reddish brown pubescent along margin. Leaves imparipinnate, together with rachis 15–20 cm; petiole 2.5–3.5 cm; stipules caducous, lanceolate, 3–5 mm, membranous; rachis adaxially sulcate, somewhat winged, glabrous; leaflets (4 or)5–8-paired; basal ones usually smaller than middle ones, at intervals of 1.2–2 cm, blades elliptic or oblong-elliptic, 3–6 × 1–2 cm, lateral veins 7–14 pairs, arcuate-anastomosing, both surfaces glabrous or abaxially sparsely pubescent at base of midvein, base broadly cuneate to rounded, margin mostly entire, with few teeth only at apex, or with 2–10 teeth per side, apex acute, or ± obtuse and apiculate. Inflorescences 6–12 × 6–10 cm, densely flowered; rachis and pedicels glabrous or sparsely pubescent; bracts lanceolate, 3–4 mm, membranous. Pedicel 2–3 mm. Flowers 6–7 mm in diam. Hypanthium campanulate, abaxially glabrous. Sepals broadly ovate or broadly ovate-triangular, 1–2 mm, apex obtuse or acute. Petals yellowish white, ovate, 3–4 × 2–3 mm, apex obtuse. Stamens 20, shorter than petals. Styles 4 or 5, not exceeding stamens, pubescent basally. Fruit white, stained red, ovoid, 6–8 mm in diam.; sepals persistent. Fl. May, fr. Sep.
Mountain slopes, mixed forests along river banks; 2000--3600 m. W Sichuan, SE Xizang, NW Yunnan [Myanmar].