五味子属种子形态及其分类学意义

用光学显微镜及扫描电镜对五味子属（Schisandra)10种96号样品的种子宏观形态和种皮的微观形态特征进行观察，首次对该属的种皮微观形态特征进行系统报道，并编排有分种检索表。研究结果表明：该属的种子宏观形态呈现平滑、细皱纹或瘤状突起，并认为五味子属种子形态可有从平滑到有细皱纹再到有瘤状突起的演化趋势；该属种皮表面微观形态可分为疣状突起型和网纹型。结合其它性状，本文认为网纹型所代表的两种植物应与本属中其它植物建立并列的分类单元。五味子属植物在种子形态特征上存在一定的差异，可为属以下、种以上的分类提供依据，并为探讨该属的系统演化提供有价值的参考资料。

Seed Morphology of the Genus Schisandra and Its Taxonomic Significance

The seeds of 10 species (96 samples) of the genus Schisandra Michaux are observed under light microscope and scanning electron microscope. The microstructural features of the seed surface are systematically reported for the first time, and a key to the species is provided in this paper. The results indicate that: the macrostructural features of seed surface including smooth type, rugulose type and tuberculate type may suggest the evolutionary trend from smooth type to rugulose type, from rugulose type to tuberculate type; the microstructural features of outer epidermis can be divided into two types, viz. verrucate type and reticulate type. Connected other characters, it is thought that the species which the reticulate type represents should be created coordinate classification with other species of the genus. Some differences between species are found, which can be used for the identification to subdivision of the genus and supraspecific taxon, furthermore, their structural diversity provides taxonomic evidence and valuable information for phylogeny of the genus.