秤锤树Sinojackia xylocarpa
中文名(Chinese Name):秤锤树
学名(Scientific Name):Sinojackia xylocarpa Hu
英文名(English Common Name):
别名(Chinese Common Name):捷克木
异名(Synonym):
科属(Family & Genus):安息香科(Styracaceae)秤锤树属
形态特征(Description):乔木,高达7米;胸径达10厘米;嫩枝密被星状短柔毛,灰褐色,成长后红褐色而无毛,表皮常呈纤维状脱落。叶纸质,倒卵形或椭圆形,长3-9厘米,宽2-5厘米,顶端急尖,基部楔形或近圆形,边缘具硬质锯齿,生于具花小枝基部的叶卵形而较小,长2-5厘米,宽1.5-2厘米,基部圆形或稍心形,两面除叶脉疏被星状短柔毛外,其余无毛,侧脉每边5-7条;叶柄长约5毫米。总状聚伞花序生于侧枝顶端,有花3-5朵;花梗柔弱而下垂,疏被星状短柔毛,长达3厘米;萼管倒圆锥形,高约4毫米,外面密被星状短柔毛,萼齿5,少7,披针形;花冠裂片长圆状椭圆形,顶端钝,长8-12毫米,宽约6毫米,两面均密被星状绒毛;雄蕊10-14枚,花丝长约4毫米,下部宽扁,联合成短管,疏被星状毛,花药长圆形,长约3毫米,无毛;花柱线形,长约8毫米,柱头不明显3裂。果实卵形,连喙长2-2.5厘米,宽1-1.3厘米,红褐色,有浅棕色的皮孔,无毛,顶端具圆锥状的喙,外果皮木质,不开裂,厚约1毫米,中果皮木栓质,厚约3.5毫米,内果皮木质,坚硬,厚约1毫米;种子1颗,长圆状线形,长约1厘米,栗褐色。花期3-4月,果期7-9月。
分布(Distribution):产江苏南京,生于海拔500-800米林缘或疏林中,华东有栽培。
引自中国植物志英文版:FOC Vol. 15 Page 268
Sinojackia xylocarpa Hu, Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 4(1): 1. 1928.
秤锤树 cheng chui shu| Styracaceae | Sinojackia
Trees to 7 m tall. Trunk to 10 cm d.b.h. Branchlets densely gray-brown stellate pubescent. Petiole ca. 5 mm; leaves of 2 types; leaves at base of flower bearing branches with blade ovate, 2--5 X 1.5--2 cm, base rounded to slightly cordate; other leaves with blade obovate to elliptic, 3--9 X 2--5 cm, base cuneate to subrounded; all blades glabrous or sparsely stellate pubescent, margin serrate, apex acute, veins 5--7 pairs. Inflorescences 3--5-flowered, 3--5 cm. Pedicel ca. 5 cm. Flowers pendulous. Calyx tube ca. 4 mm, densely stellate pubescent; teeth 5--7, lanceolate. Corolla lobes oblong-elliptic, 8--12 X ca. 6 mm, apex obtuse. Filaments ca. 4 mm, sparsely stellate pubescent. Style ca. 8 mm. Fruit ovoid including a conical rostrum, 1.8--2 X 0.8--1.5 cm, exocarp ca. 1 mm thick, mesocarp 3--3.5 mm thick. Seeds dark brown, cylindrical-linear, ca. 1 cm. Fl. Mar-Apr, fr. Jul-Sep.
* Forest edges; 500--800 m. Jiangsu.
(责任编辑:徐晔春)
学名(Scientific Name):Sinojackia xylocarpa Hu
英文名(English Common Name):
别名(Chinese Common Name):捷克木
异名(Synonym):
科属(Family & Genus):安息香科(Styracaceae)秤锤树属
形态特征(Description):乔木,高达7米;胸径达10厘米;嫩枝密被星状短柔毛,灰褐色,成长后红褐色而无毛,表皮常呈纤维状脱落。叶纸质,倒卵形或椭圆形,长3-9厘米,宽2-5厘米,顶端急尖,基部楔形或近圆形,边缘具硬质锯齿,生于具花小枝基部的叶卵形而较小,长2-5厘米,宽1.5-2厘米,基部圆形或稍心形,两面除叶脉疏被星状短柔毛外,其余无毛,侧脉每边5-7条;叶柄长约5毫米。总状聚伞花序生于侧枝顶端,有花3-5朵;花梗柔弱而下垂,疏被星状短柔毛,长达3厘米;萼管倒圆锥形,高约4毫米,外面密被星状短柔毛,萼齿5,少7,披针形;花冠裂片长圆状椭圆形,顶端钝,长8-12毫米,宽约6毫米,两面均密被星状绒毛;雄蕊10-14枚,花丝长约4毫米,下部宽扁,联合成短管,疏被星状毛,花药长圆形,长约3毫米,无毛;花柱线形,长约8毫米,柱头不明显3裂。果实卵形,连喙长2-2.5厘米,宽1-1.3厘米,红褐色,有浅棕色的皮孔,无毛,顶端具圆锥状的喙,外果皮木质,不开裂,厚约1毫米,中果皮木栓质,厚约3.5毫米,内果皮木质,坚硬,厚约1毫米;种子1颗,长圆状线形,长约1厘米,栗褐色。花期3-4月,果期7-9月。
分布(Distribution):产江苏南京,生于海拔500-800米林缘或疏林中,华东有栽培。
引自中国植物志英文版:FOC Vol. 15 Page 268
Sinojackia xylocarpa Hu, Contr. Biol. Lab. Chin. Assoc. Advancem. Sci., Sect. Bot. 4(1): 1. 1928.
秤锤树 cheng chui shu| Styracaceae | Sinojackia
Trees to 7 m tall. Trunk to 10 cm d.b.h. Branchlets densely gray-brown stellate pubescent. Petiole ca. 5 mm; leaves of 2 types; leaves at base of flower bearing branches with blade ovate, 2--5 X 1.5--2 cm, base rounded to slightly cordate; other leaves with blade obovate to elliptic, 3--9 X 2--5 cm, base cuneate to subrounded; all blades glabrous or sparsely stellate pubescent, margin serrate, apex acute, veins 5--7 pairs. Inflorescences 3--5-flowered, 3--5 cm. Pedicel ca. 5 cm. Flowers pendulous. Calyx tube ca. 4 mm, densely stellate pubescent; teeth 5--7, lanceolate. Corolla lobes oblong-elliptic, 8--12 X ca. 6 mm, apex obtuse. Filaments ca. 4 mm, sparsely stellate pubescent. Style ca. 8 mm. Fruit ovoid including a conical rostrum, 1.8--2 X 0.8--1.5 cm, exocarp ca. 1 mm thick, mesocarp 3--3.5 mm thick. Seeds dark brown, cylindrical-linear, ca. 1 cm. Fl. Mar-Apr, fr. Jul-Sep.
* Forest edges; 500--800 m. Jiangsu.
(责任编辑:徐晔春)
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