中文名（Chinese Name）：伯乐树
学名（Scientific Name）：Bretschneidera sinensis Hemsl.
英文名（English Common Name）：
别名（Chinese Common Name）：钟萼木
异名（Synonym）：Bretschneidera yunshanensis Chun et F. C. How
科属（Family & Genus）：伯乐树科（Bretschneideraceae）伯乐树属
形态特征（Description）：乔木，高10-20米；树皮灰褐色；小枝有较明显的皮孔。羽状复叶通常长25-45厘米，总轴有疏短柔毛或无毛；叶柄长10-18厘米，小叶7-15片，纸质或革质，狭椭圆形，菱状长圆形，长圆状披针形或卵状披针形，多少偏斜，长6-26厘米，宽3-9厘米，全缘，顶端渐尖或急短渐尖，基部钝圆或短尖、楔形，叶面绿色，无毛，叶背粉绿色或灰白色，有短柔毛，常在中脉和侧脉两侧较密；叶脉在叶背明显，侧脉8-15对；小叶柄长2-10毫米，无毛。花序长20-36厘米；总花梗、花梗、花萼外面有棕色短绒毛；花淡红色，直径约4厘米，花梗长2-3厘米；花萼直径约2厘米，长1.2-1.7厘米，顶端具短的5齿，内面有疏柔毛或无毛，花瓣阔匙形或倒卵楔形，顶端浑圆，长1.8-2厘米，宽1-1.5厘米，无毛，内面有红色纵条纹；花丝长2.5-3厘米，基部有小柔毛；子房有光亮、白色的柔毛，花柱有柔毛。果椭圆球形，近球形或阔卵形，长3-5.5厘米，直径2-3.5厘米，被极短的棕褐色毛和常混生疏白色小柔毛，有或无明显的黄褐色小瘤体，果瓣厚1.2-5毫米；果柄长2.5-3.5厘米，有或无毛；种子椭圆球形，平滑，成熟时长约1.8厘米，直径约1.3厘米。花期3-9月，果期5月至翌年4月。
分布（Distribution）：产四川、云南、贵州、广西、广东、湖南、湖北、江西、浙江、福建等省区。生于低海拔至中海拔的山地林中。越南北部也有分布
用途（Use）：
引自中国植物志英文版FOC Vol. 8 Page 197
1. Bretschneidera sinensis Hemsley, Hooker's Icon. Pl. 28: t. 2708. 1901.
伯乐树 bo le shu| Bretschneideraceae  | Bretschneidera
Bretschneidera sinensis
Credit: Photo: C. I. Peng.
Bretschneidera yunshanensis Chun & F. C. How.
Trees 10-20 m tall; bark gray-brown. Leaves 25-75 cm, sparsely hairy in leaf axils or glabrous; petiole 10-25 cm; petiolules 2-10 mm; leaflets 7-15, green adaxially, green to glaucous abaxially, narrowly elliptic, rhombic-oblong, oblong-lanceolate, or ovate-lanceolate, slightly oblique, 6-26 × 3-9 cm, papery or leathery, glabrous adaxially, minutely pubescent abaxially, base obtuse to rounded to cuneate, margin entire, apex acuminate to acute; lateral veins in 8-15 pairs. Inflorescence 20-36 cm. Flowers 3-5 cm in diam., pedicel 2-4 cm. Calyx 1.5-2.3 × 1.2-2.7 cm, 5-lobed. Petals white to pink, becoming darker with age, red striate, broadly spatulate to obovate-cuneate, 1.8-2 × 1-1.5 cm, base rounded, apex notched; upper petal hoodlike, covering stamens and style. Filaments 2.5-3 cm, hairy at base, curving downward apically. Ovary and style hairy; style 3-4 cm, bent abruptly downward apically. Capsule ellipsoid-globose to subglobose to ovoid or obovoid, 3-5.5 × 2-3.5 cm, warty, minutely hairy; valves 1.2-5 mm thick; fruiting pedicel 2.5-3.5 cm. Seeds red, ellipsoid-globose, compressed, 1.5-2.5 × 1.2-1.8 cm, smooth. Fl. Mar-Sep, fr. Aug-Apr. 2n = 18*.
Forests; 300-1700 m. Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Sichuan, Taiwan, Yunnan, Zhejiang [N Thailand, N Vietnam].
Since Bretschneidera was found only recently in Taiwan and Thailand, it seems possible that the genus might also be found in Laos and N Myanmar. The trees are most conspicuous, and should be sought in the early spring when the showy flowers are open.
（责任编辑：徐晔春）