常绿乔木，高达30m，胸围达2.5-3m。种子长卵形，扁平，长6-8mm，宽约5mm，暗褐色，两侧有窄翅。花期4月，球果10月下旬成熟。广泛栽培于我国长江流域及秦岭以南地区。
塔斯马尼亚木材，黄色香木，波状纹理，用于雕刻和船舶制造；有时归入南洋杉属。
Tasmanian timber tree with yellow aromatic wavy - grained wood used for carving and ship building; sometimes placed in genus Dacrydium.
前言： 目的：比较不同植株千层塔中石杉碱甲含量，优选原料药材。
Objective:to compare content of huperzine A in different plants serrate clubmoss herb to optimize the raw material.
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