油楠Sindora glabra
中文名（Chinese Name）：油楠
学名（Scientific Name）： Sindora glabra Merr. ex de Wit.
英文名（English Common Name）：
别名（Chinese Common Name）：蚌壳树
异名（Synonym）：
科属（Family & Genus）：云实科,Caesalpiniaceae油楠属
形态特征（Description）：乔木，高8-20米，直径30-60厘米。叶长10-20厘米，有小叶2-4对；小叶对生，革质，椭圆状长圆形，很少卵形，长5-10厘米，宽2.5-5厘米，顶端钝急尖或短渐尖，基部钝圆稍不等边，侧脉纤细，多条，不明显，网脉不明显；小叶柄长约5毫米。圆锥花序生于小枝顶端之叶腋，长15-20厘米，密被黄色柔毛；苞片卵形，叶状，长5-7毫米；花梗长2-4毫米，中部以上有线状披针形小苞片1-2枚，长5-6毫米，苞片、花梗及小苞片均密被黄色柔毛；萼片4,两面均被黄色柔毛，2型，最上面的1枚阔卵形，长约5.5毫米，宽5毫米，背隆起，有软刺21-23枚，其他3枚椭圆状披针形，有软刺6-10枚；花瓣1枚，被包于最上面萼片内，长椭圆状圆形，长约5毫米，宽2-6毫米，基部近截平，有不明显的瓣柄，顶端圆钝，外面密被柔毛，边缘具睫毛，内面无毛；能育雄蕊9枚，雄蕊管长约2毫米，两面被紧贴、褐色的粗伏毛，内面较密，花药几乎等大，长2-3毫米，顶端凹头，有时有小凸尖；子房长约3毫米，密被锈色粗伏毛，有胚珠4-5颗，柄长约0.8毫米，花柱丝状，旋卷，无毛。荚果圆形或椭圆形，长5-8厘米，宽约5厘米，外面有散生硬直的刺，受伤时伤口常有胶汁流出；种子1颗，扁圆形，黑色，直径约1.8厘米。花期4-5月；果期6-8月。
分布（Distribution）：分布于海南。生于中海拔山地的混交林内。
用途（Use）：木材性质优良，可供建筑、车辆及家具用材；树脂用于照明。
引自植物志英文版：FOC Vol. 10 Page 25
Sindora glabra Merrill ex de Wit, Bull. Jard. Bot. Buitenzorg, sér. 3. 18: 46. 1949.
油楠 you nan | Fabaceae | Sindora
Trees, 8-20 m tall. Trunk 30-60 cm d.b.h. Leaves 10-20 cm; petiolules ca. 5 mm; leaflets 2-4 pairs, opposite, elliptic-oblong, rarely ovate, 5-10 × 2.5-5 cm, lateral veins slender, together with reticulate veinlets obscure, base rounded, slightly oblique, apex obtusely acute or shortly acuminate. Panicles in axils of apical leaves, 15-20 cm, densely yellowish pubescent; bracts ovate, leaflike, 5-7 mm. Pedicels 2-4 mm, with 1 or 2 bracteoles from middle upward; bracteoles linear-lanceolate, 5-6 mm; bracts, pedicels, and bracteoles densely yellowish pubescent. Calyx lobes yellowish pubescent on both surfaces, dimorphic, uppermost one broadly ovate, ca. 5.5 × 5 mm, back arcuate, with 21-23 soft bristles, other 3 elliptic-lanceolate, with 6-10 soft bristles. Petal 1, enclosed in uppermost calyx lobe, oblong-orbicular, ca. 5 × 2-6 mm, outside densely pubescent, inside glabrous, base subtruncate, obscurely clawed, margin ciliate, apex rounded. Fertile stamens 9, staminal tube ca. 2 mm, both sides adpressed brown strigose, especially inside; anthers subequal in size, 2-3 mm, apex emarginate, sometimes cuspidate. Ovary ca. 3 mm, densely strigose, 4- or 5-ovuled; stalk ca. 0.8 mm; style convolute, glabrous. Legume orbicular or elliptic, 5-8 × ca. 5 cm, with dispersed, hard, straight prickles; valves often shedding glue when cut. Seed solitary, blackish, spheroidal, ca. 1.8 cm in diam. Fl. Apr-May, fr. Jun-Aug.
● Mixed forests, mountain slopes, riverbanks; near sea level to 800 m. Fujian, Guangdong, Hainan, Yunnan.
The wood has good qualities and is used for building houses and making furniture.
（责任编辑：徐晔春）
学名（Scientific Name）： Sindora glabra Merr. ex de Wit.
英文名（English Common Name）：
别名（Chinese Common Name）：蚌壳树
异名（Synonym）：
科属（Family & Genus）：云实科,Caesalpiniaceae油楠属
形态特征（Description）：乔木，高8-20米，直径30-60厘米。叶长10-20厘米，有小叶2-4对；小叶对生，革质，椭圆状长圆形，很少卵形，长5-10厘米，宽2.5-5厘米，顶端钝急尖或短渐尖，基部钝圆稍不等边，侧脉纤细，多条，不明显，网脉不明显；小叶柄长约5毫米。圆锥花序生于小枝顶端之叶腋，长15-20厘米，密被黄色柔毛；苞片卵形，叶状，长5-7毫米；花梗长2-4毫米，中部以上有线状披针形小苞片1-2枚，长5-6毫米，苞片、花梗及小苞片均密被黄色柔毛；萼片4,两面均被黄色柔毛，2型，最上面的1枚阔卵形，长约5.5毫米，宽5毫米，背隆起，有软刺21-23枚，其他3枚椭圆状披针形，有软刺6-10枚；花瓣1枚，被包于最上面萼片内，长椭圆状圆形，长约5毫米，宽2-6毫米，基部近截平，有不明显的瓣柄，顶端圆钝，外面密被柔毛，边缘具睫毛，内面无毛；能育雄蕊9枚，雄蕊管长约2毫米，两面被紧贴、褐色的粗伏毛，内面较密，花药几乎等大，长2-3毫米，顶端凹头，有时有小凸尖；子房长约3毫米，密被锈色粗伏毛，有胚珠4-5颗，柄长约0.8毫米，花柱丝状，旋卷，无毛。荚果圆形或椭圆形，长5-8厘米，宽约5厘米，外面有散生硬直的刺，受伤时伤口常有胶汁流出；种子1颗，扁圆形，黑色，直径约1.8厘米。花期4-5月；果期6-8月。
分布（Distribution）：分布于海南。生于中海拔山地的混交林内。
用途（Use）：木材性质优良，可供建筑、车辆及家具用材；树脂用于照明。
引自植物志英文版：FOC Vol. 10 Page 25
Sindora glabra Merrill ex de Wit, Bull. Jard. Bot. Buitenzorg, sér. 3. 18: 46. 1949.
油楠 you nan | Fabaceae | Sindora
Trees, 8-20 m tall. Trunk 30-60 cm d.b.h. Leaves 10-20 cm; petiolules ca. 5 mm; leaflets 2-4 pairs, opposite, elliptic-oblong, rarely ovate, 5-10 × 2.5-5 cm, lateral veins slender, together with reticulate veinlets obscure, base rounded, slightly oblique, apex obtusely acute or shortly acuminate. Panicles in axils of apical leaves, 15-20 cm, densely yellowish pubescent; bracts ovate, leaflike, 5-7 mm. Pedicels 2-4 mm, with 1 or 2 bracteoles from middle upward; bracteoles linear-lanceolate, 5-6 mm; bracts, pedicels, and bracteoles densely yellowish pubescent. Calyx lobes yellowish pubescent on both surfaces, dimorphic, uppermost one broadly ovate, ca. 5.5 × 5 mm, back arcuate, with 21-23 soft bristles, other 3 elliptic-lanceolate, with 6-10 soft bristles. Petal 1, enclosed in uppermost calyx lobe, oblong-orbicular, ca. 5 × 2-6 mm, outside densely pubescent, inside glabrous, base subtruncate, obscurely clawed, margin ciliate, apex rounded. Fertile stamens 9, staminal tube ca. 2 mm, both sides adpressed brown strigose, especially inside; anthers subequal in size, 2-3 mm, apex emarginate, sometimes cuspidate. Ovary ca. 3 mm, densely strigose, 4- or 5-ovuled; stalk ca. 0.8 mm; style convolute, glabrous. Legume orbicular or elliptic, 5-8 × ca. 5 cm, with dispersed, hard, straight prickles; valves often shedding glue when cut. Seed solitary, blackish, spheroidal, ca. 1.8 cm in diam. Fl. Apr-May, fr. Jun-Aug.
● Mixed forests, mountain slopes, riverbanks; near sea level to 800 m. Fujian, Guangdong, Hainan, Yunnan.
The wood has good qualities and is used for building houses and making furniture.
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