尖萼乌口树Tarenna acutisepala How ex W. C. Chen
尖萼乌口树Tarenna acutisepala How ex W. C. Chen
13. 尖萼乌口树（中国高等植物图鉴）图版100: 1-5
Tarenna acutisepala How ex W. C. Chen in Acta Phytotax. Sinica 24 (6): 477. 1986. ——T. pubinervis auct. non Hutchins. (1916): Merr. in Lingnan Sci. Journ. 15: 427. 1936, quoad specimen W. T. Tsang 20760.
灌木，高1-2.5米；嫩枝灰色，被短硬毛，稍老时毛和表皮一起脱落而呈红褐色。叶纸质或近革质，长圆形或披针形，少为长圆状椭圆形或近卵形，长4-19.5厘米，宽1.5-5.6厘米，顶端渐尖或短尖，基部楔形、稍钝或短尖，上面无毛或沿中脉被疏短柔毛，罕有极疏的短伏毛，下面被短柔毛或乳突状毛，有时无毛；侧脉较疏，纤细，5-7对；叶柄长5-22毫米，有短硬毛；托叶三角形，长约6毫米，锐尖，外面在中肋和基部被短硬毛。伞房状的聚伞花序顶生，有花数至多朵，紧密，长2.5-3厘米，宽约4厘米，总花梗通常短，有短柔毛；小苞片披针形，长1.5-2毫米，有短柔毛；花梗长2-3毫米，有短柔毛；花萼长4毫米，外面有短柔毛，萼管卵形，萼裂片三角状披针形，长约1.5毫米，顶端尖；花冠淡黄色，长约1.4厘米，外面无毛，冠管内面上部和喉部有柔毛，花冠裂片椭圆形，长约4毫米；花药线状长圆形，长3毫米；花柱丝状，长约1.5厘米，中部以上有柔毛，柱头伸出，胚珠每室16-20颗。浆果近球形，直径5-7毫米，有短柔毛或无毛，顶部常有宿存的萼裂片；种子9-31颗。花期4-9月，果期5-11月。
产于江苏、江西、福建、湖南、广东、广西、四川；生于海拔520-1530米处的山坡或山谷溪边林中或灌丛中。模式标本采自广东北江姐婆山。
《Flora of China》 Vol. 19 (2011)
Tarenna acutisepala F. C. How ex W. C. Chen Acta Phyto-tax. Sin. 24: 477. 1986.
尖萼乌口树 jian e wu kou shu
Shrubs, 1-2.5 m tall; branches hispidulous or hirtellous becoming glabrescent, gray to reddish brown. Petiole 5-22 mm, hispidulous; leaf blade drying papery or subleathery, elliptic-oblong, lanceolate, oblong-ovate, or subovate, 4-19.5 × 1.5-5.6 cm, adaxially glabrous or sometimes sparsely puberulent along midrib or sparsely strigillose throughout, abaxially strigillose to hirtellous or sometimes glabrous, base cuneate, obtuse, or acute, apex acuminate or acute; secondary veins 5-7 pairs; stipules persistent, shortly united around stem, triangular, narrowly triangular, or lanceolate, 4-7 mm, hispidulous to glabrescent, acute. Inflorescence corymbiform to congested-cymose, 2.5-3 × 3-4 cm, several to many flowered, strigillose, pedunculate; peduncle 0.5-1 cm; bracts lanceolate to triangular, 1.5-2 mm; pedicels 0.5-3 mm. Flowers subsessile to pedicellate. Calyx strigillose; hypanthium portion ellipsoid to ovoid, 1-1.5 mm; limb 1.5-2 mm, deeply lobed; lobes triangular-lanceolate, apex acute. Corolla pale yellow, glabrous outside; tube ca. 10 mm, villosulous inside upper part and throat; lobes narrowly elliptic, ca. 4 mm. Ovules 16-20 per cell. Berries subglobose, 5-7 mm in diam., strigillose or glabrous; seeds 9-31. Fl. Apr-Sep, fr. May-Nov.
● Forests or thickets at streamsides in valleys or on mountain slopes; 500-1600 m. Fujian, Guangdong, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan.
科名：茜草科 Rubiaceae
属名：乌口树属 Tarenna
13. 尖萼乌口树（中国高等植物图鉴）图版100: 1-5
Tarenna acutisepala How ex W. C. Chen in Acta Phytotax. Sinica 24 (6): 477. 1986. ——T. pubinervis auct. non Hutchins. (1916): Merr. in Lingnan Sci. Journ. 15: 427. 1936, quoad specimen W. T. Tsang 20760.
灌木，高1-2.5米；嫩枝灰色，被短硬毛，稍老时毛和表皮一起脱落而呈红褐色。叶纸质或近革质，长圆形或披针形，少为长圆状椭圆形或近卵形，长4-19.5厘米，宽1.5-5.6厘米，顶端渐尖或短尖，基部楔形、稍钝或短尖，上面无毛或沿中脉被疏短柔毛，罕有极疏的短伏毛，下面被短柔毛或乳突状毛，有时无毛；侧脉较疏，纤细，5-7对；叶柄长5-22毫米，有短硬毛；托叶三角形，长约6毫米，锐尖，外面在中肋和基部被短硬毛。伞房状的聚伞花序顶生，有花数至多朵，紧密，长2.5-3厘米，宽约4厘米，总花梗通常短，有短柔毛；小苞片披针形，长1.5-2毫米，有短柔毛；花梗长2-3毫米，有短柔毛；花萼长4毫米，外面有短柔毛，萼管卵形，萼裂片三角状披针形，长约1.5毫米，顶端尖；花冠淡黄色，长约1.4厘米，外面无毛，冠管内面上部和喉部有柔毛，花冠裂片椭圆形，长约4毫米；花药线状长圆形，长3毫米；花柱丝状，长约1.5厘米，中部以上有柔毛，柱头伸出，胚珠每室16-20颗。浆果近球形，直径5-7毫米，有短柔毛或无毛，顶部常有宿存的萼裂片；种子9-31颗。花期4-9月，果期5-11月。
产于江苏、江西、福建、湖南、广东、广西、四川；生于海拔520-1530米处的山坡或山谷溪边林中或灌丛中。模式标本采自广东北江姐婆山。
《Flora of China》 Vol. 19 (2011)
Tarenna acutisepala F. C. How ex W. C. Chen Acta Phyto-tax. Sin. 24: 477. 1986.
尖萼乌口树 jian e wu kou shu
Shrubs, 1-2.5 m tall; branches hispidulous or hirtellous becoming glabrescent, gray to reddish brown. Petiole 5-22 mm, hispidulous; leaf blade drying papery or subleathery, elliptic-oblong, lanceolate, oblong-ovate, or subovate, 4-19.5 × 1.5-5.6 cm, adaxially glabrous or sometimes sparsely puberulent along midrib or sparsely strigillose throughout, abaxially strigillose to hirtellous or sometimes glabrous, base cuneate, obtuse, or acute, apex acuminate or acute; secondary veins 5-7 pairs; stipules persistent, shortly united around stem, triangular, narrowly triangular, or lanceolate, 4-7 mm, hispidulous to glabrescent, acute. Inflorescence corymbiform to congested-cymose, 2.5-3 × 3-4 cm, several to many flowered, strigillose, pedunculate; peduncle 0.5-1 cm; bracts lanceolate to triangular, 1.5-2 mm; pedicels 0.5-3 mm. Flowers subsessile to pedicellate. Calyx strigillose; hypanthium portion ellipsoid to ovoid, 1-1.5 mm; limb 1.5-2 mm, deeply lobed; lobes triangular-lanceolate, apex acute. Corolla pale yellow, glabrous outside; tube ca. 10 mm, villosulous inside upper part and throat; lobes narrowly elliptic, ca. 4 mm. Ovules 16-20 per cell. Berries subglobose, 5-7 mm in diam., strigillose or glabrous; seeds 9-31. Fl. Apr-Sep, fr. May-Nov.
● Forests or thickets at streamsides in valleys or on mountain slopes; 500-1600 m. Fujian, Guangdong, Guangxi, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan.