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罗汉松Podocarpus macrophyllus

时间:2013-07-15 16:19来源:未知 作者:徐晔春 点击:
罗汉松,Podocarpus macrophyllus,罗汉杉,土杉






中文名(Chinese Name):罗汉松
学名(Scientific Name):Podocarpus macrophyllus D. Don
英文名(English Common Name):
别名(Chinese Common Name):罗汉杉、土杉
异名(Synonym):Margbensonia macrophylla (Thunb.) A. V. Bobrov et Melikyan;Taxus macrophylla Thunb.  Podocarpus canaliculatus Carrière;Podocarpus longifolia Gordon 
科属(Family & Genus):罗汉松科(Podocarpaceae)罗汉松属
形态特征(Description):乔木,高达20米,胸径达60厘米;树皮灰色或灰褐色,浅纵裂,成薄片状脱落;枝开展或斜展,较密。叶螺旋状着生,条状披针形,微弯,长7-12厘米,宽7-10毫米,先端尖,基部楔形,上面深绿色,有光泽,中脉显著隆起,下面带白色、灰绿色或淡绿色,中脉微隆起。雄球花穗状、腋生,常3-5个簇生于极短的总梗上,长3-5厘米,基部有数枚三角状苞片;雌球花单生叶腋,有梗,基部有少数苞片。种子卵圆形,径约1厘米,先端圆,熟时肉质假种皮紫黑色,有白粉,种托肉质圆柱形,红色或紫红色,柄长1-1.5厘米。花期4-5月,种子8-9月成熟。
分布(Distribution):于江苏、浙江、福建、安徽、江西、湖南、四川、云南、贵州、广西、广东等省区,栽培于庭园作观赏树。野生的树木极少。日本也有分布。
用途(Use):材质细致均匀,易加工。可作家具、器具、文具及农具等用。
引自中国植物志英文版FOC Vol. 4
Podocarpus macrophyllus (Thunberg) Sweet, Hort. Suburb. Londin. 211. 1818.
罗汉松 luo han song | Podocarpaceae  | Podocarpus
Trees to 20 m tall; trunk to 60 cm d.b.h.; bark gray or grayish brown, peeling off in thin flakes; branches spreading or erect-spreading, rather dense; branchlets glabrous or pubescent. Leaves spirally arranged, sessile; blade dark green and glossy adaxially, grayish green, pale green, or tinged white abaxially, linear-lanceolate, oblanceolate, or oblong-oblanceolate, slightly curved, 1.7-12 cm × 2-10 mm, midvein prominently raised adaxially, slightly raised abaxially, base cuneate, apex mucronate or acute to long acuminate. Pollen cones axillary, usually in clusters of 3-5 on very short peduncle, spikelike, 3-5 cm, with several triangular bracts at base. Seed-bearing structures axillary, solitary, pedunculate, with few basal bracts. Receptacle red or purplish red when ripe, columnar. Epimatium purplish black when ripe, with white powder. Seed ovoid, ca. 1 cm in diam., apex rounded. Pollination Apr-May, seed maturity Aug-Sep. 2n = 38.
Forests, open thickets, roadsides; near sea level to 1000 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangsu, Jiangxi, Sichuan, ?Taiwan, Yunnan, Zhejiang; introduced or status uncertain in Shaanxi [Japan, ?N Myanmar].
(责任编辑:徐晔春)
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