家乡的野生植物(15)     北重楼

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       北重楼，俗称七叶一枝花，轮叶王孙。百合科重楼属多年生植物。高约50厘米，茎单一，直立，暗紫色。叶6-8片轮生于茎顶，通常无柄。叶片宽倒披针形，主脉3，侧脉疏少，羽状。夏季开黄绿色花，花单生于茎顶叶丛中，有长梗，长5-13厘米。花被8片，2轮，外轮4，广披针形，内轮4片，线形，带黄色，稍短于外被片，下垂。子房近球形，花柱4，浆果球形，紫黑色。

       北重楼以根状茎入药，有清热解毒，散瘀消肿的功效。

       北重楼是黑龙江省地方用药。和中药重楼的原植物同科同属不同种，中药重楼的原植物是华重楼和七叶一枝花，这两种黑龙江没有分布。用药时要区别开来。加以地域的北字以示区别。五常市的浅山区分布较多，资源量大，但很少用药。

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