《中国植物志》|| 蔷薇科 ROSACEAE ||沟核组 Sect. Mirae Yu et Lu ||光核桃 Amygdalus mira (Koehne) T. T. Yu & L. T. Lu

11．光核桃（中国树木分类学）西藏桃图版3: 9-11
Amygdalus mira (Koehne) Yu et Lu, comb. nov. ——Prunus mira Koehne in Sarg. Pl. Wils. 1: 272. 1912; Rehd. in Journ, Arn. Arb. 3:23. 1921: Sealy in Bot. Mag. 161: t. 9548. 1939; Hara & Will. Enum. Flow. P1. Nepal 2:142. 1979.——Persica mica (Koehne) Kov. & Kost. in Bull. App. Bot. Genet. ser. 8.4: 4. 1935.——Amygdalus mira (Koehne) Kov. & Kost., 俞德浚, 中国果树分类学32. 图7. 1979. nom. err.
乔木，高达10米；枝条细长，开展，无毛，嫩枝绿色，老时灰褐色，具紫褐色小皮孔。叶片披针形或卵状披针形，长5-11厘米，宽1.5-4厘米，先端渐尖，基部宽楔形至近圆形，上面无毛，下面沿中脉具柔毛，叶边有圆钝浅锯齿，近顶端处全缘，齿端常具小腺体；叶柄长8-15毫米，无毛，常具紫红色扁平腺体。花单生，先于叶开放，直径2.2-3厘米；花梗长1-3毫米；萼筒钟形，紫褐色，无毛；萼片卵形或长卵形，紫绿色，先端圆钝，无毛或边缘微具长柔毛；花瓣宽倒卵形，长1-1.5厘米，先端微凹，粉红色；雄蕊多数，比花瓣短得多；子房密被柔毛，花柱长于或几与雄蕊等长。果实近球形，直径约3厘米，肉质，不开裂，外面密被柔毛；果梗长约4-5毫米；核扁卵圆形，长约2厘米，两侧稍压扁，顶端急尖，基部近截形，稍偏斜，表面光滑，仅于背面和腹面具少数不明显纵向浅沟纹。花期3-4月，果期8-9月。
产四川、云南、西藏。生于山坡杂木林中或山谷沟边，海拔2000-3400米。野生或栽培。在苏联也有栽培。
本种核光滑，在桃属中较为独特，易与其他种区别。果实含糖量高，可供食用。此种也较耐寒，为培育抗寒桃的良好原始材料。

《云南植物志》|| 蔷薇科 Rosaceae ||桃属 Amygdalus L. ||光核桃 Amygdalus mira (Koehne) Yu et Lu

4.光核桃（中国树木分类学）图版129: 6-8
羌桃（云南种子植物名录）
Amygdalus mira (Koehne) Yu et Lu, 中国植物志 (1986); Flora of China (2003).
Prunus mira Koehne in Sarg. (1912); Rehd. (1921); Sealy (1939)*; 云南种子植物名录 (1984); Hara et Will. (1979); Persica mira (Koehne) Kov. et Kost. (1935), Amygdalus mira (Koehne) Kov. et Kost. (1935), 中国果树分类学(1979)* nom. err.
乔木，高达10米。枝条细长，开展，无毛，嫩时枝条绿色，老枝灰褐色，具紫褐色小皮孔。叶片披针形或卵状披针形，长5-12厘米，宽1.5-4厘米，先端渐尖，基部宽楔形至近圆形，边缘有钝圆浅锯齿，近顶端全缘，齿端常有小腺体，上面无毛，背面沿中脉具柔毛；叶柄长8-15毫米，无毛，常具紫红色扁平腺体。花单生，先于叶开放，直径2.1-3厘米；花梗长1-3毫米；萼筒钟形，紫褐色，无毛，萼片卵形或长卵形，紫绿色，先端钝圆，无毛或边缘微具长柔毛；花瓣阔卵形，长1-1.5厘米，先段微凹，粉红色；雄蕊多数，比花瓣短得多；子房密被柔毛。果梗长4-5毫米；果实近球形，径约3厘米，肉质，不开裂，外面密被柔毛；核扁卵圆形，长约2厘米，两侧稍压扁，顶端急尖，基部近截形，稍偏斜，表面光滑，仅于背面和腹面具少数不明显纵向浅沟纹。花期3-4月，果期8-9月。
产德钦、维西、丽江、宁蒗、永胜、鹤庆；生于海拔2000-3300米的山坡杂木林中或山谷沟边。分布于四川、西藏。野生或栽培。俄罗斯也有栽培。
本种核光滑，在桃属中较为独特，易与其他种区别。果实含糖量高，可供食用。

《Flora of China》|| Rosaceae || Amygdalus ||光核桃 Amygdalus

11. Amygdalus mira (Koehne) Ricker, Bull. Biol. Soc. Wash. 30: 17. 1917.

光核桃 guang he tao

Prunus mira Koehne in Sargent, Pl. Wilson. 1: 272. 1912; Persica mira (Koehne) Kovalev & Kostina.

Trees to 10 m tall. Branchlets green when young, grayish brown with age, slender, spreading, glabrous, with purplish brown small lenticels. Winter buds purplish brown, ovoid, 3–6 mm, glabrous, apex acute. Petiole 0.8–1.5 cm, glabrous, often with flattened purplish red nectaries; leaf blade lanceolate to ovate-lanceolate, 5–11 × 1.5–4 cm, abaxially pubescent along midvein, adaxially glabrous, base broadly cuneate to subrounded, margin shallowly crenate but entire near apex and teeth usually gland-tipped, apex acuminate. Flowers solitary, opening before leaves, 2.2–3 cm in diam. Pedicel 1–3 mm, 4–5 mm in fruit, glabrous. Hypanthium campanulate, purplish brown, outside glabrous. Sepals ovate to narrowly ovate, purplish green, outside glabrous or slightly villous along margin, apex obtuse. Petals pink, broadly obovate, 1–1.5 cm, apex emarginate. Stamens many, much shorter than petals. Ovary densely pubescent. Style longer or ± as long as stamens. Drupe subglobose, ca. 3 cm in diam., densely pubescent; mesocarp fleshy, not splitting when ripe; endocarp compressed ovoid-globose, ca. 2 cm, slightly flattened on both sides, surface smooth and with few longitudinal shallow furrows only on dorsal and ventral sides, base subtruncate and slightly asymmetric, apex acute. Fl. Mar–Apr, fr. Aug–Sep.

Slopes in mixed forests, mountain valleys, ravines; 2000--4000 m. Sichuan, Xizang, Yunnan [Russia].

This species is cultivated for its fruit and seeds. It is often uncertain whether collections are wild, cultivated, or escaped from cultivation.