滇南新乌檀Neonauclea tsaiana S. Q. Zou
滇南新乌檀Neonauclea tsaiana S. Q. Zou
4. 滇南新乌檀（新拟）
Neonauclea tsaiana S. Q. Zou in Journ. Arn. Arb. 69: 73. 1988.——Neonauclea navillei auct. non (Levl.) Merr.: How in Sunyatsenia 6: 250. 1946.——Neonauclea griffithii auct. non (Hook. f.) Merr.: 云南种子植物名录, 下册: 1266. 1984, p. p.
大乔木，高30-40米，胸高直径达1米，基部有板根；树干高15-25米，圆柱状，劲直，树皮粗糙，内皮多纤维，黄色，有时带粉红；顶芽强压扁；小枝粗壮，直径4-6毫米，密生透镜状皮孔。叶片纸质，卵形或卵状椭圆形，长12-22厘米，宽6-13厘米，顶端短尖或渐尖，基部圆至楔尖，全缘，干时绿色，无毛，上面有光泽，下面暗晦；侧脉7-8对，下面凸，脉腋内有窝孔，孔上覆有茸毛；叶柄长1.5-4厘米；托叶2片，卵形，长1.2-2.4厘米，宽0.8-1.4厘米，彼此粘贴，无毛，脱落。花序梗1-5，长2-4厘米，其上有2片脱落的苞片；头状花序不计花冠直径10-18毫米；花间小苞片圆锥形，长0.7-1毫米；花有长1-1.5毫米的托杯，萼长0.8-1毫米，被短柔毛，裂片5，长3-4毫米，外面被短柔毛，里面无毛，脱落，顶部倒梨形；花冠淡黄色，漏斗形，管长7-9毫米，裂片5，长圆形，长约2.5毫米；雄蕊5，生于冠管的上部，花丝短，花药长圆形，长1毫米，背着；花柱长12-15毫米，伸出部分长5-6毫米，柱头球状。头状果序直径15-20毫米，果疏松，棒状，压扁，长6-7毫米，顶部被苍白色短柔毛，冠以宿萼，室背和室间开裂；种子椭圆形，两端有翅，基部微2裂。花期9-10月。
我国特有，产于云南西双版纳（景洪）；生于海拔750-1 100米处的热带雨林中，喜潮湿和高温环境。
本种在产地为著名的材用树种，因滥砍滥伐，已濒于灭绝。
《Flora of China》 Vol. 19 (2011)
Neonauclea tsaiana S. Q. Zou J. Arnold Arbor. 69: 73. 1988.
滇南新乌檀 dian nan xin wu tan
Trees, to 30-40 m tall and 1 m d.b.h.; trunk cylindrical, with buttresses; bark rough, with inner bark fibrous, yellow or sometimes with pink; branches flattened to angled, densely lenticellate, glabrescent. Petiole 12-40 mm, stout, glabrous; leaf blade drying leathery, elliptic or ovate-elliptic, 12-22 × 6-13 cm, adaxially glabrous and rather shiny, abaxially glabrous and matte, base broadly obtuse to cuneate, apex acute to shortly acuminate; secondary veins 6 or 8 pairs, with tomentulose to glabrous foveolate domatia in abaxial axils; stipules ovate, 12-24 × 8-14 mm, glabrous, weakly keeled in basal portion, apex obtuse. Inflorescences glabrous; peduncles 1-3, 2-4.5 cm; flowering heads 1-7(or 9), solitary on peduncles or 3-7 in branched cymes, 10-18 mm in diam. across calyces, 25-30 mm in diam. across corollas; involucral bracts not seen; bracteoles conical, 0.7-1 mm. Calyx with ovary portion obconic, 1-1.5 mm, glabrous except puberulent at apex; limb partially lobed, with basal tubular portion 0.8-1 mm; lobes deciduous before corollas open, with shaft clavate, 3-4 mm, densely puberulent except adaxially glabrous in basal portion, apical portion rounded to cucullate, densely puberulent. Corolla pale yellow, funnelform, glabrous; tube 5-6.5 mm; lobes elliptic-oblong, ca. 2.5 × 1.2 mm, apex acute. Stigmas subglobose, ca. 1 mm, exserted for 5-6 mm. Fruiting heads 15-20 mm in diam. Capsules clavate, somewhat flattened, 6-7 mm, glabrous in basal portion, puberulent or pilosulous at apex; seeds unknown. Fl. Sep-Oct, fr. May-Jun.
● Tropical rain forests at streamsides or in bottom of valleys; 500-1100 m. Yunnan.
This species was described almost simultaneously with the publication of Ridsdale’s revision of the genus (Blumea 34: 177-275. 1989) and was not mentioned by him presumably because he was unaware of it.This species was described almost simultaneously with the publication of Ridsdale’s revision of the genus (Blumea 34: 177-275. 1989) and was not mentioned by him presumably because he was unaware of it.
别名：具柄新乌檀;蔡氏新乌檀;
科名：茜草科 Rubiaceae
属名：新乌檀属 Neonauclea
4. 滇南新乌檀（新拟）
Neonauclea tsaiana S. Q. Zou in Journ. Arn. Arb. 69: 73. 1988.——Neonauclea navillei auct. non (Levl.) Merr.: How in Sunyatsenia 6: 250. 1946.——Neonauclea griffithii auct. non (Hook. f.) Merr.: 云南种子植物名录, 下册: 1266. 1984, p. p.
大乔木，高30-40米，胸高直径达1米，基部有板根；树干高15-25米，圆柱状，劲直，树皮粗糙，内皮多纤维，黄色，有时带粉红；顶芽强压扁；小枝粗壮，直径4-6毫米，密生透镜状皮孔。叶片纸质，卵形或卵状椭圆形，长12-22厘米，宽6-13厘米，顶端短尖或渐尖，基部圆至楔尖，全缘，干时绿色，无毛，上面有光泽，下面暗晦；侧脉7-8对，下面凸，脉腋内有窝孔，孔上覆有茸毛；叶柄长1.5-4厘米；托叶2片，卵形，长1.2-2.4厘米，宽0.8-1.4厘米，彼此粘贴，无毛，脱落。花序梗1-5，长2-4厘米，其上有2片脱落的苞片；头状花序不计花冠直径10-18毫米；花间小苞片圆锥形，长0.7-1毫米；花有长1-1.5毫米的托杯，萼长0.8-1毫米，被短柔毛，裂片5，长3-4毫米，外面被短柔毛，里面无毛，脱落，顶部倒梨形；花冠淡黄色，漏斗形，管长7-9毫米，裂片5，长圆形，长约2.5毫米；雄蕊5，生于冠管的上部，花丝短，花药长圆形，长1毫米，背着；花柱长12-15毫米，伸出部分长5-6毫米，柱头球状。头状果序直径15-20毫米，果疏松，棒状，压扁，长6-7毫米，顶部被苍白色短柔毛，冠以宿萼，室背和室间开裂；种子椭圆形，两端有翅，基部微2裂。花期9-10月。
我国特有，产于云南西双版纳（景洪）；生于海拔750-1 100米处的热带雨林中，喜潮湿和高温环境。
本种在产地为著名的材用树种，因滥砍滥伐，已濒于灭绝。
《Flora of China》 Vol. 19 (2011)
Neonauclea tsaiana S. Q. Zou J. Arnold Arbor. 69: 73. 1988.
滇南新乌檀 dian nan xin wu tan
Trees, to 30-40 m tall and 1 m d.b.h.; trunk cylindrical, with buttresses; bark rough, with inner bark fibrous, yellow or sometimes with pink; branches flattened to angled, densely lenticellate, glabrescent. Petiole 12-40 mm, stout, glabrous; leaf blade drying leathery, elliptic or ovate-elliptic, 12-22 × 6-13 cm, adaxially glabrous and rather shiny, abaxially glabrous and matte, base broadly obtuse to cuneate, apex acute to shortly acuminate; secondary veins 6 or 8 pairs, with tomentulose to glabrous foveolate domatia in abaxial axils; stipules ovate, 12-24 × 8-14 mm, glabrous, weakly keeled in basal portion, apex obtuse. Inflorescences glabrous; peduncles 1-3, 2-4.5 cm; flowering heads 1-7(or 9), solitary on peduncles or 3-7 in branched cymes, 10-18 mm in diam. across calyces, 25-30 mm in diam. across corollas; involucral bracts not seen; bracteoles conical, 0.7-1 mm. Calyx with ovary portion obconic, 1-1.5 mm, glabrous except puberulent at apex; limb partially lobed, with basal tubular portion 0.8-1 mm; lobes deciduous before corollas open, with shaft clavate, 3-4 mm, densely puberulent except adaxially glabrous in basal portion, apical portion rounded to cucullate, densely puberulent. Corolla pale yellow, funnelform, glabrous; tube 5-6.5 mm; lobes elliptic-oblong, ca. 2.5 × 1.2 mm, apex acute. Stigmas subglobose, ca. 1 mm, exserted for 5-6 mm. Fruiting heads 15-20 mm in diam. Capsules clavate, somewhat flattened, 6-7 mm, glabrous in basal portion, puberulent or pilosulous at apex; seeds unknown. Fl. Sep-Oct, fr. May-Jun.
● Tropical rain forests at streamsides or in bottom of valleys; 500-1100 m. Yunnan.
This species was described almost simultaneously with the publication of Ridsdale’s revision of the genus (Blumea 34: 177-275. 1989) and was not mentioned by him presumably because he was unaware of it.This species was described almost simultaneously with the publication of Ridsdale’s revision of the genus (Blumea 34: 177-275. 1989) and was not mentioned by him presumably because he was unaware of it.