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

10. Amygdalus kansuensis (Rehder) Skeels, Proc. Biol. Soc. Wash. 38: 87. 1925.

甘肃桃 gan su tao

Prunus kansuensis Rehder, J. Arnold Arbor. 3: 21. 1921; Persica kansuensis (Rehder) Kovalev & Kostina.

Trees or shrubs, 3–7 m tall. Branchlets greenish brown, later reddish brown on exposed side, slender, glabrous, with indistinct small lenticels. Winter buds ovoid to long ovoid, glabrous, apex ± obtuse. Petiole 5–10 mm, glabrous, usually without nectaries; leaf blade ovate-lanceolate to lanceolate, 5–12 × 1.5–3.5 cm, broadest basally from middle, abaxially pubescent on midvein near base or glabrous, adaxially glabrous, base broadly cuneate, margin sparsely thinly serrate with teeth gland-tipped or not, apex acuminate. Flowers solitary, opening before leaves, 2–3 cm in diam. Pedicel very short to nearly absent, 4–5 mm in fruit. Hypanthium campanulate, outside pubescent or rarely subglabrous. Sepals ovate to ovate-oblong, shorter than hypanthium, outside pubescent or rarely subglabrous, apex obtuse. Petals white or pinkish, suborbicular to broadly obovate, base tapering into claws, margin sometimes undulate or shallowly incised, apex obtuse. Stamens 20–30, unequal in length, shorter than petals. Ovary pubescent. Style longer than stamens. Drupe yellowish, ovoid-globose to subglobose, ca. 2 cm in diam., densely pubescent; mesocarp fleshy, not splitting at maturity; endocarp subglobose, compressed, on both sides, surface longitudinally and transversely shallowly furrowed but not pitted, base subtruncate and symmetric, apex obtuse. Fl. Mar–Apr, fr. Aug–Sep.

Mountain areas; 1000--2300 m. Gansu, Hubei, Qinghai, Shaanxi, Sichuan.


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