青山安息香Styrax tonkinensis

中文名(Chinese Name):青山安息香
学名(Scientific Name):Styrax tonkinensis (Pierre) Craib ex Hartwich
英文名(English Common Name):Siam benzoin
别名(Chinese Common Name):越南安息香
异名(Synonym):Anthostyrax tonkinensis Pierre  Styrax macrothyrsus Perkins  Styrax hypoglaucus Perkins  Styrax subniveus Merr. et Chun
科属(Family & Genus):安息香科(Styracaceae)安息香属
形态特征(Description):乔木,高6-30米,树冠圆锥形,胸径8-60厘米,树皮暗灰色或灰褐色,有不规则纵裂纹;枝稍扁,被褐色绒毛,成长后变为无毛,近圆柱形,暗褐色。叶互生,纸质至薄革质,椭圆形、椭圆状卵形至卵形,长5-18厘米,宽4-10厘米,顶端短渐尖,基部圆形或楔形,边近全缘,嫩叶有时具2-3个齿裂,上面无毛或嫩叶脉上被星状毛,下面密被灰色至粉绿色星状绒毛,侧脉每边5-6条,第三级小脉近平行;叶柄长8-15毫米,上面有宽槽,密被褐色星状柔毛。圆锥花序,或渐缩小成总状花序,花序长3-10厘米或更长;花序梗和花梗密被黄褐色星状短柔毛;花白色,长12-25毫米,花梗长5-10毫米;小苞片生于花梗中部或花萼上,钻形或线形,长3-5毫米;花萼杯状,高3-5毫米,顶端截形或有5齿,萼齿三角形,外面密被黄褐色或灰白色星状绒毛,内面被白色短柔毛;花冠裂片膜质,卵状披针形或长圆状椭圆形,长10-16毫米,宽3-4毫米,两面均密被白色星状短柔毛,花蕾时作覆瓦状排列,花冠管长3-4毫米;花丝扁平,上部分离,疏被白色星状柔毛,下部联合成筒,无毛;花药狭长圆形,长4-10毫米;花柱长约1.5厘米,无毛。果实近球形,直径10-12毫米,顶端急尖或钝,外面密被灰色星状绒毛;种子卵形,栗褐色,密被小瘤状突起和星状毛。花期4-6月,果熟期8-10月。
分布(Distribution):产于云南、贵州、广西、广东、福建、湖南和江西,生于海拔100-2000米的山坡或山谷、疏林中或林缘。越南也有。
引自中国植物志英文版:FOC Vol. 15 Page 256 
Styrax tonkinensis (Pierre) Craib ex Hartwich, Apotheker-Zeitung. 28: 698. 1913.
越南安息香 yue nan an xi xiang| Styracaceae  | Styrax
Anthostyrax tonkinensis Pierre, Fl. Forest. Cochinch. 4: t. 260. 1892; Styrax hypoglaucus Perkins; S. macrothyrsus Perkins; S. subniveus Merrill & Chun.
Trees 6--30 m tall. Trunk 8--60 cm d.b.h., bark dark gray, irregularly divided. Branchlets stellate tomentose, glabrescent. Leaves alternate; petiole 0.5--1.5 cm; leaf blade elliptic to ovate, 5--18 X 4--10 cm, papery to leathery, abaxially densely gray to glaucous stellate pubescent, adaxially glabrous except for veins, base rounded to cuneate, margin entire or apically serrate, apex shortly acuminate, secondary veins 5 or 6 pairs, tertiary veins subparallel. Racemes or panicles 3--10 cm. Pedicel 5--10 mm. Flowers 1.2--2.5 cm. Calyx cup-shaped, 3--5 mm, truncate to 5-toothed. Corolla tube 3--4 mm; lobes ovate-lanceolate, 10--16 X 3--4 mm, membranous. Filaments sparsely white stellate pubescent; anthers narrowly oblong. Style ca. 1.5 cm, glabrous. Fruit subglobose, 1--1.2 cm in diam., densely gray stellate tomentose, apex apiculate to obtuse. Seeds chestnut brown, ovoid, densely tuberculate, stellate tomentose and pubescent. Fl. May-Jun, fr. Aug-Oct.
Mixed forests; 100--2000 m. Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Yunnan [Cambodia, Laos, Thailand, Vietnam].
 青山安息香Styrax tonkinensis

青山安息香Styrax tonkinensis

青山安息香Styrax tonkinensis
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