According to plants' characters, there are 238 species of xylophyta, 300 species of herb, and 80 species of climbing plant.

按植物性状统计，木本维管束植物有238种，草本植物有300种，藤本植物有80种。

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Aim to find the basis in morphology that herbs have hypericin while xylophyta have not hypericin in Hypericum L., and to provide the basis for developing plant resources in Hypericum.

目的寻找金丝桃属中，草本植物含金丝桃素而木本不含的形态学及组织化学依据，为该属植物资源的开发利用提供依据。

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Results There are secretory nodule and secretory cavity(canal), two secretory structures different in the character of morphology, in herbs, but there is only secretory cavity(canal)in xylophyta.

结果存在分泌细胞团和分泌囊（道）二类形态结构特点不同的分泌结构，草本植物中两者都有，而木本植物中只有分泌囊（道）。

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