织梦CMS - 轻松建站从此开始!

花卉图片网

当前位置: 主页 > 乔木 >

火炬松Pinus taeda

时间:2013-07-15 15:59来源:未知 作者:徐晔春 点击:
火炬松,Pinus taeda





中文名(Chinese Name):火炬松
学名(Scientific Name):Pinus taeda L.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Pinus mughoides E.H.L.Krause  Pinus taeda var. mughoides E.H.L.Krause  
科属(Family & Genus):松科Pinaceae松属
形态特征(Description):乔木,在原产地高达30米;树皮鳞片状开裂,近黑色、暗灰褐色或淡褐色;枝条每年生长数轮;小枝黄褐色或淡红褐色;冬芽褐色,矩圆状卵圆形或短圆柱形,顶端尖,无树脂。针叶3针一束,稀2针一束,长12-25厘米,径约1.5毫米,硬直,蓝绿色;横切面三角形,二型皮下层细胞,三至四层在表皮层下呈倒三角状断续分布,树脂道通常2个,中生。球果卵状圆锥形或窄圆锥形,基部对称,长6-15厘米,无梗或几无梗,熟时暗红褐色;种鳞的鳞盾横脊显著隆起,鳞脐隆起延长成尖刺;种子卵圆形,长约6毫米,栗褐色,种翅长约2厘米。
分布(Distribution):原产北美东南部。
用途(Use):造林树种。木材供建筑等用并生产优良松脂。
引自中国植物志英文版FOC Vol. 4 Page 20
Pinus taeda Linnaeus, Sp. Pl. 2: 1000. 1753.
火炬松 huo ju song  | Pinaceae  | Pinus
Trees to 45 m tall; trunk to 1.6 m d.b.h. in native range; bark red-brown, forming square or irregularly oblong, scaly plates; crown broadly conical or rounded; branchlets orangish or yellow-brown, aging darker brown, ca. 1 cm in diam., rough; winter buds pale red-brown, conical-cylindric, slightly resinous, scales white fringed at margin. Needles ascending or spreading, dark yellow-green, slightly twisted, (10-)12-18(-23) cm × 1-2 mm, pliant, stomatal lines present on all surfaces, base with persistent sheath 1-2.5 cm, margin finely serrulate. Seed cones nearly terminal, solitary or in small clusters, sessile or subsessile, mostly dull yellow-brown, narrowly ovoid when open, 6-12 cm, maturing in 2 years, then soon shedding seeds. Seed scales without dark border adaxially distally; apophyses dull, rhombic, slightly thickened, variously raised but more so toward base of cone, strongly cross keeled; umbo strongly pyramidal, recurved, tapering to a stoutly based, sharp prickle. Seeds red-brown, obdeltoid, 5-6 mm; wing to 2 cm.
Cultivated. Anhui, Fujian, Guangdong (Guangzhou Shi), Guangxi, Henan, Hubei (Wuhan Shi), Hunan, Jiangsu (Nanjing Shi), Jiangxi (Lu Shan), Taiwan, Zhejiang [native to SE United States]
 
(责任编辑:徐晔春)
织梦二维码生成器
顶一下
(0)
0%
踩一下
(0)
0%
------分隔线----------------------------
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
用户名: 验证码:点击我更换图片
栏目列表
推荐内容