目的:对黄花稔Sida acuta Burm.f进行性状与显微鉴定研究。方法:采用性状鉴别、显微鉴定方法,以及花粉粒的扫描电镜观察。结果:黄花稔的性状、显微鉴别特征较明显;花粉粒球形,表面有刺状纹饰,萌发孔属散孔型。结论:本研究结果为黄花稔药材鉴别、质量标准的制定、生药学研究资料的补充,以及进一步开发利用提供了依据。 Objective: To study the characteristics and microscopic identification of Sida acuta Burm.f. Methods: Character identification, microscopic identification, and scanning electron microscopy of pollen grains were used. RESULTS: The characters and microscopic identification characteristics of S. bracteatum were obvious. The pollen grains were spherical with a spine-like ornamentation on the surface. The germination hole was a diffused hole type. Conclusion: The results of this study provide basis for the identification of Medicago Sativa, the formulation of quality standards, the supplement of pharmacognosy research data, and further development and utilization.