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倒吊笔Wrightia pubescens

时间:2018-06-27 09:57来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):倒吊笔 学名( Scientific Name ): Wrightia pubescens R.Br. 英文名( English Common Name ): 别名( Chinese Common Name ): 神仙蜡烛、细姑木 异名( Synonym ): Wrightia kwangtungensis Tsiang;Anasser laniti Bla





中文名(Chinese Name):倒吊笔
学名(Scientific Name):Wrightia pubescens R.Br.
英文名(English Common Name):
别名(Chinese Common Name):神仙蜡烛、细姑木
异名(Synonym):Wrightia kwangtungensis Tsiang;Anasser laniti Blanco;Wrightia annamensis Eberh. et Dubard;Wrightia laniti (Blanco) Merr.;Wrightia pubescens subsp. laniti (Blanco) Ngan 
科属(Family & Genus):夹竹桃科(Apocynaceae)倒吊笔属
形态特征(Description):乔木,高8-20米,胸径可达60厘米,含乳汁;树皮黄灰褐色,浅裂;枝圆柱状,小枝被黄色柔毛,老时毛渐脱落,密生皮孔。叶坚纸质,每小枝有叶片3-6对,长圆状披针形、卵圆形或卵状长圆形,顶端短渐尖,基部急尖至钝,长5-10厘米,宽3-6厘米,叶面深绿色,被微柔毛,叶背浅绿色,密被柔毛;叶脉在叶面扁平,在叶背凸起,侧脉每边8-15条;叶柄长0.4-1厘米。聚伞花序长约5厘米;总花梗长0.5-1.5厘米;花梗长约1厘米;萼片阔卵形或卵形,顶端钝,比花冠筒短,被微柔毛,内面基部有腺体;花冠漏斗状,白色、浅黄色或粉红色,花冠筒长5毫米,裂片长圆形,顶端钝,长约1.5厘米,宽7毫米;副花冠分裂为10鳞片,呈流苏状,比花药长或等长,其中5枚鳞片生于花冠裂片上,与裂片对生,长8毫米,顶端通常有3个小齿,其余5枚鳞片生于花冠筒顶端与花冠裂片互生,长6毫米,顶端2深裂;雄蕊伸出花喉之外,花药箭头状,被短柔毛;子房由2枚粘生心皮组成,无毛,花柱丝状,向上逐渐增大,柱头卵形。蓇葖2个粘生,线状披针形,灰褐色,斑点不明显,长15-30厘米,直径1-2厘米;种子线状纺锤形,黄褐色,顶端具淡黄色绢质种毛;种毛长2-3.5厘米。花期4-8月,果期8月-翌年2月。
分布(Distribution):产广东、广西、贵州及云南等省区,散生于低海拔的热带雨林中或稀树林中。东南亚至澳大利亚也有。
用途(Use):木材纹理通直,结构细致,材质稍软而轻,加工容易,干燥后不开裂、不变形,适于作轻巧的上等家具、铅笔杆、雕刻图章、乐器用材。树皮纤维可制人造棉及造纸。树形美观,庭园中有作栽培观赏。根和茎皮可药用,广西民间有用来治颈淋巴结、风湿性关节炎。
引自中国植物志英文版FOC Vol. 16 Page 174
Wrightia pubescens R. Brown, Mem. Wern. Nat. Hist. Soc. 1: 73. 1811.
倒吊笔 dao diao bi| Apocynaceae  | Wrightia
Anasser laniti Blanco; Wrightia annamensis Eberhardt & Dubard; W. kwangtungensis Tsiang; W. laniti (Blanco) Merrill; W. pubescens subsp. laniti (Blanco) Ngan.
Trees to 35 m tall. Trunk to 60 cm in diam.; bark yellowish brown; young branchlets yellowish pubescent, glabrate with age, densely lenticellate. Petiole ca. 1 cm; leaf blade narrowly oblong, ovate, or narrowly ovate, 5-10 X 3-6 cm, papery, puberulent to glabrous adaxially, densely pubescent to puberulent or glabrescent except along veins abaxially, veins 8-15 pairs. Cymes ca. 5 cm, pubescent. Sepals ovate to broadly so, 2-5 mm. Corolla white or pinkish white, funnelform, tube 5-6.5 mm; lobes oblong, 1-2 cm; corona fringed, scales 10, as long as or longer than anthers, puberulent inside. Stamens pubescent, inserted at mouth of corolla; anthers exserted. Ovaries connate, glabrous. Follicles connate, sublinear, 15-30 X 1-2 cm, not lenticellate. Seeds narrowly fusiform, coma to 3.5 cm. Fl. Apr-Aug, fr. Aug-Dec.
Secondary rain forests, dry woods; ca. 400 m. Guangdong, Guangxi, Guizhou, Hainan, Yunnan [Cambodia, India, Indonesia, Malaysia, Philippines, Thailand, Vietnam; Australia]
The wood is used for making furniture, poles, seals, and musical instruments. Bark fibers are used for making paper and artificial cotton. Extracts from the roots and bark are used to treat scrofula and rheumatic arthralgia.

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