目的:探索秦艽组植物种子微形态特征,为其种类鉴别提供科学依据。方法:通过扫描电镜对甘肃不同产地不同种秦艽组植物种子进行观察分析。结果:该组植物的种子在形态、大小和纹饰等方面具有相对的一致性,但是小秦艽网胞明显宽于其它的几个种。结论:其种子超微结构特征可为秦艽组植物的鉴定提供新的资料。 Objective: To explore the micro-morphological characteristics of plant seeds in Gentiana macrophylla (Gentiana macrophylla) group and provide a scientific basis for their species identification. Methods: Scanning electron microscope (SEM) was used to observe the plant seeds of different species of Gentiana macrophylla from different habitats in Gansu province. Results: The seeds of this group were relatively consistent in morphology, size and ornamentation, but the cytoplasm of C. pygmaea was obviously wider than the other species. Conclusion: The ultrastructure characteristics of seeds can provide new information for identification of plants in Gentiana macrophylla.