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日本五针松Pinus parviflora

时间:2013-07-15 15:54来源:未知 作者:徐晔春 点击:
日本五针松,Pinus parviflora




中文名(Chinese Name):日本五针松
学名(Scientific Name):Pinus parviflora Sieb. et Zucc.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Pinus mayrii Zabel  Pinus pentaphylla var. himekomatsu (Miyabe & Kud?) Makino
科属(Family & Genus):松科Pinaceae松属
形态特征(Description):乔木,在原产地高达25米,胸径1米;幼树树皮淡灰色,平滑,大树树皮暗灰色,裂成鳞状块片脱落;枝平展,树冠圆锥形;一年生枝幼嫩时绿色,后呈黄褐色,密生淡黄色柔毛;冬芽卵圆形,无树脂。针叶5针一束,微弯曲,长3.5-5.5厘米,径不及1毫米,边缘具细锯齿,背面暗绿色,无气孔线,腹面每侧有3-6条灰白色气孔线;横切面三角形,单层皮下层细胞,背面有2个边生树脂道,腹面1个中生或无树脂道;叶鞘早落。球果卵圆形或卵状椭圆形,几无梗,熟时种鳞张开,长4-7.5厘米,径3.5-4.5厘米;中部种鳞宽倒卵状斜方形或长方状倒卵形,长2-3厘米,宽1.8-2厘米,鳞盾淡褐色或暗灰褐色,近斜方形,先端圆,鳞脐凹下,微内曲,边缘薄,两侧边向外弯,下部底边宽楔形;种子为不规则倒卵圆形,近褐色,具黑色斑纹,长8-10毫米,径约7毫米,种翅宽6-8毫米,连种子长1.8-2厘米。
分布(Distribution):原产日本。
用途(Use):
引自中国植物志英文版FOC Vol. 4 Page 25
Pinus parviflora Siebold & Zuccarini, Fl. Jap. 2: 27. 1842.
日本五针松 ri ben wu zhen song  | Pinaceae  | Pinus
Trees to 25 m tall; trunk to 1 m d.b.h.; bark pale gray, aging dull gray, smooth when young, furrowed with age into scaly plates; crown conical; 1st-year branchlets initially green, aging yellow-brown, densely pale yellow pubescent; winter buds ovoid, not resinous. Needles 5 per bundle, slightly curved, triangular in cross section, 3.5-5.5 cm × 0.7-0.9 mm, stomatal lines present along abaxial surfaces, white, vascular bundle 1, base with sheath shed. Seed cones subsessile, ovoid or ovoid-ellipsoid, 4-7.5 × 3.5-4.5 cm. Seed scales obovate-rhombic or oblong-obovate, 2-3 × 1.8-2 cm; apophyses pale brown or dull gray-brown, almost rhombic; umbo terminal, sunken, margin recurved distally. Seeds nearly brown, mottled with black, irregularly obovoid, 8-10 × ca. 7 mm; wing ca. 1 cm.
Widely cultivated in cities in the Chang Jiang basin and Shandong [native to Japan]
Commonly used as a garden tree or for bonsai.
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