钝叶黄檀Dalbergia obtusifolia (Baker) Prain
钝叶黄檀Dalbergia obtusifolia (Baker) Prain
17.钝叶黄檀（中国主要植物图说·豆科）牛肋巴、牛筋木（云南）
Dalbergia obtusifolia (Baker) Prain in Journ. As. Soc. Beng. 70 (2): 42. 1901, et in Ann. Bot. Gard. Calc. 10 (1): 76. 1904; 中国主要植物图说·豆科570, 图556. 1955; 中国高等植物图鉴2: 470, 图2669. 1980; 云南种子植物名录上册: 586. 1984; 中国树木志2: 1404. 1985.——D. ovata Grah. ex Benth. var. obtusifolia Baker in Hook. f. Fl. Brit. Ind. 2: 231. 1876.——D. glauca Kurz in Journ. As. Soc. Beng. 45 (2): 280. 1876.
乔木，高13-17米；分枝扩展。幼枝下垂，无毛。羽状复叶长20-30厘米；托叶早落；小叶2（-3）对，近革质，椭圆形或倒卵形，有时复叶基部的小叶近圆形，顶生的最大，长5-14厘米，宽4.5-8厘米，两端圆形或先端有时微缺，基部阔楔形，上面绿色，有光泽，下面色较淡或青白色，两面无毛；小叶柄长约5毫米。圆锥花序顶生或腋生，长15-20厘米，径12-15厘米；总花梗和花梗被黄色短柔毛；基生小苞片卵形，被毛，副萼状小苞片卵形，长不及花萼之半，早落；花萼钟状，萼齿5,卵形，较萼筒短，先端钝，最下1枚略长于其余4枚；花冠淡黄色，花瓣具稍长的柄，旗瓣长圆形，先端微缺，翼瓣与背弯拱的龙骨瓣均于内侧基部具下向钝耳；雄蕊10，单体，花丝长短相间；子房椭圆形，无毛，具长柄，有胚珠3粒，花柱长，柱头小。荚果长圆形至带状，长4-8厘米，宽1-1.5厘米，果瓣革质，对种子部分有明显网纹，有种子1-2粒；种子肾形，长约10毫米，宽约6毫米，种皮棕色，平滑。
产云南（南部）。生于山地疏林或河谷灌丛中，海拔800-1300米。模式标本采自思茅。
本种了云南名“牛肋巴”，为优良的紫胶虫寄主树之一。
《Flora of China》 Vol. 10 (2010)
Dalbergia obtusifolia (Baker) Prain J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 70: 42. 1901.
钝叶黄檀 dun ye huang tan
Dalbergia ovata Graham ex Bentham var. obtusifolia Baker in J. D. Hooker, Fl. Brit. India 2: 231. 1876; D. glauca Kurz.
Trees, 13-17 m tall. Branches spreading; young shoots pendulous, glabrous. Leaves 20-30 cm; stipules early cadu-cous; leaflets 5-7; petiolules ca. 5 mm; blades elliptic or obo-vate, sometimes basal suborbicular, subleathery, terminal one largest, 5-14 × 4.5-8 cm, both surfaces glabrous, both ends rounded or sometimes apex emarginate and base broadly cu-neate. Panicles terminal or axillary, 15-20 × 12-15 cm; pedun-cles and pedicels yellowish puberulent; bracts and bracteoles ovate, puberulent; bracteoles ca. 1/2 as long as calyx, caducous. Calyx campanulate, 5-toothed; teeth ovate, shorter than tube, obtuse, lowest tooth slightly longer than others. Corolla pale yellow; petals slightly long clawed; standard oblong, emargi-nate; wings and keel with downward short auricles on upper side below. Stamens 10, monadelphous; filaments alternately shorter and longer. Ovary long stipitate, elliptic, glabrous, 3-ovuled; style long; stigma small. Legume oblong to strap-shaped, 4-8 × 1-1.5 cm, leathery, distinctly reticulate opposite 1 or 2 seeds. Seeds reniform, ca. 10 × 6 mm; testa brown, smooth. Fl. Mar, fr. Jun-Aug.
● Open forests, mountain slopes, among bushes at riversides; 800-1300 m. Guizhou, S Yunnan.
别名：牛肋巴;虫胶;紫胶;紫梗树;洋干漆;卖买占;牛筋木;铁刀木;牛肋巴钝叶黄檀;牛筋木树;
科名：豆科 Leguminosae
属名：黄檀属 Dalbergia
17.钝叶黄檀（中国主要植物图说·豆科）牛肋巴、牛筋木（云南）
Dalbergia obtusifolia (Baker) Prain in Journ. As. Soc. Beng. 70 (2): 42. 1901, et in Ann. Bot. Gard. Calc. 10 (1): 76. 1904; 中国主要植物图说·豆科570, 图556. 1955; 中国高等植物图鉴2: 470, 图2669. 1980; 云南种子植物名录上册: 586. 1984; 中国树木志2: 1404. 1985.——D. ovata Grah. ex Benth. var. obtusifolia Baker in Hook. f. Fl. Brit. Ind. 2: 231. 1876.——D. glauca Kurz in Journ. As. Soc. Beng. 45 (2): 280. 1876.
乔木，高13-17米；分枝扩展。幼枝下垂，无毛。羽状复叶长20-30厘米；托叶早落；小叶2（-3）对，近革质，椭圆形或倒卵形，有时复叶基部的小叶近圆形，顶生的最大，长5-14厘米，宽4.5-8厘米，两端圆形或先端有时微缺，基部阔楔形，上面绿色，有光泽，下面色较淡或青白色，两面无毛；小叶柄长约5毫米。圆锥花序顶生或腋生，长15-20厘米，径12-15厘米；总花梗和花梗被黄色短柔毛；基生小苞片卵形，被毛，副萼状小苞片卵形，长不及花萼之半，早落；花萼钟状，萼齿5,卵形，较萼筒短，先端钝，最下1枚略长于其余4枚；花冠淡黄色，花瓣具稍长的柄，旗瓣长圆形，先端微缺，翼瓣与背弯拱的龙骨瓣均于内侧基部具下向钝耳；雄蕊10，单体，花丝长短相间；子房椭圆形，无毛，具长柄，有胚珠3粒，花柱长，柱头小。荚果长圆形至带状，长4-8厘米，宽1-1.5厘米，果瓣革质，对种子部分有明显网纹，有种子1-2粒；种子肾形，长约10毫米，宽约6毫米，种皮棕色，平滑。
产云南（南部）。生于山地疏林或河谷灌丛中，海拔800-1300米。模式标本采自思茅。
本种了云南名“牛肋巴”，为优良的紫胶虫寄主树之一。
《Flora of China》 Vol. 10 (2010)
Dalbergia obtusifolia (Baker) Prain J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 70: 42. 1901.
钝叶黄檀 dun ye huang tan
Dalbergia ovata Graham ex Bentham var. obtusifolia Baker in J. D. Hooker, Fl. Brit. India 2: 231. 1876; D. glauca Kurz.
Trees, 13-17 m tall. Branches spreading; young shoots pendulous, glabrous. Leaves 20-30 cm; stipules early cadu-cous; leaflets 5-7; petiolules ca. 5 mm; blades elliptic or obo-vate, sometimes basal suborbicular, subleathery, terminal one largest, 5-14 × 4.5-8 cm, both surfaces glabrous, both ends rounded or sometimes apex emarginate and base broadly cu-neate. Panicles terminal or axillary, 15-20 × 12-15 cm; pedun-cles and pedicels yellowish puberulent; bracts and bracteoles ovate, puberulent; bracteoles ca. 1/2 as long as calyx, caducous. Calyx campanulate, 5-toothed; teeth ovate, shorter than tube, obtuse, lowest tooth slightly longer than others. Corolla pale yellow; petals slightly long clawed; standard oblong, emargi-nate; wings and keel with downward short auricles on upper side below. Stamens 10, monadelphous; filaments alternately shorter and longer. Ovary long stipitate, elliptic, glabrous, 3-ovuled; style long; stigma small. Legume oblong to strap-shaped, 4-8 × 1-1.5 cm, leathery, distinctly reticulate opposite 1 or 2 seeds. Seeds reniform, ca. 10 × 6 mm; testa brown, smooth. Fl. Mar, fr. Jun-Aug.
● Open forests, mountain slopes, among bushes at riversides; 800-1300 m. Guizhou, S Yunnan.