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罗汉松大叶中叶小叶怎样区分
更新时间: 2020-10-20 00:00:00  

罗汉松大叶中叶小叶:都是罗汉松的变种。

区分如下:

1、大叶罗汉松:就是我们平常说的罗汉松,罗汉松属常绿针叶乔木,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。雄球花穗状、腋生,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,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。

2、小叶罗汉松:又叫雀舌罗汉松,呈灌木状,叶短而密生,多着生于小枝顶端,背面有白粉短叶罗汉松,别名小罗汉松、土杉,常呈灌木状,叶呈螺旋状簇生排列,单叶为短条带状披针形,先端钝尖,基部浑圆或楔形,叶革质,浓绿色,中脉明显,叶柄极短。

关键词: 罗汉松 中叶 小叶 怎样 区分

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