柳杉Cryptomeria japonica var. sinensis

柳杉Cryptomeria japonica var. sinensis

柳杉Cryptomeria japonica var. sinensis

柳杉Cryptomeria japonica var. sinensis

中文名(Chinese Name):柳杉
学名(Scientific Name): Cryptomeria japonica var. sinensis Miq.
英文名(English Common Name):
别名(Chinese Common Name):长叶孔雀松
异名(Synonym):Cryptomeria japonica subsp. sinensis (Miq.) P. D. Sell;Cryptomeria fortunei Hooibr.;Cryptomeria japonica subsp. sinenssis (Thunb. ex L. f.) Sell;Cryptomeria sinensis   
科属(Family & Genus):杉科(Taxodiaceae)柳杉属
形态特征(Description):乔木,高达40米,胸径可达2米多;树皮红棕色,纤维状,裂成长条片脱落;大枝近轮生,平展或斜展;小枝细长,常下垂,绿色,枝条中部的叶较长,常向两端逐渐变短。叶钻形略向内弯曲,先端内曲,四边有气孔线,长1-1.5厘米,果枝的叶通常较短,有时长不及1厘米,幼树及萌芽枝的叶长达2.4厘米。雄球花单生叶腋,长椭圆形,长约7毫米,集生于小枝上部,成短穗状花序状;雌球花顶生于短枝上。球果圆球形或扁球形,径1-2-2厘米,多为1.5-1.8厘米;种鳞20左右,上部有4-5(很少6-7)短三角形裂齿,齿长2-4毫米,基部宽1-2毫米,鳞背中部或中下部有一个三角状分离的苞鳞尖头,尖头长3-5毫米,基部宽3-14毫米,能育的种鳞有2粒种子;种子褐色,近椭圆形,扁平,长4-6.5毫米,宽2-3.5毫米,边缘有窄翅。花期4月,球果10月成熟。
分布(Distribution):为我国特有树种,产于浙江天目山、福建南屏三千八百坎及江西庐山等地海拔1100米以下地带,有数百年的老树。
用途(Use):边材黄白色,心材淡红褐色,材质较轻软,纹理直,结构细,耐腐力强,易加工。可供房屋建筑、电杆、器具、家具及造纸原料等用材。
引自中国植物志英文版FOC Vol. 4
Cryptomeria japonica var. sinensis Miquel in Siebold & Zuccarini, Fl. Jap. 2: 52. 1870.
柳杉 liu shan| Taxodiaceae  | Cryptomeria
Cryptomeria kawaii Hayata; C. mairei (H. Léveillé) Nakai; Cupressus mairei H. Léveillé.
Leaves usually strongly incurved throughout, arising at 15-30° to axis on leader branchlets, 30-40° on fertile branchlets, rigid but relatively soft. Most pollen cones shorter than their subtending leaf. Cone scales ca. 20, each bearing 2 seeds; distal projections of bracts and cone scales 1-2 mm.
* Forests on deep, well-drained soils subject to warm, moist conditions; below 1100 m in native range, but ascending to 2500 m in Yunnan as a cultivated tree. Native in Fujian (Nanping Shi), Jiangxi (Lu Shan), Sichuan, Yunnan, NW Zhejiang (Tianmu Shan); introduced in S Anhui, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, S Jiangsu, Jiangxi, Sichuan, Yunnan, Zhejiang
This variety has been treated at species rank by some authors, under the invalid name Cryptomeria fortunei Hooibrenk.
(责任编辑:徐晔春)

顶一下[2]

踩一下[0]