The pollen morphological features of 16 rare &, endangered plant species grown in Helan Mountains were observed and described by Light Microscopy (LM) and Scanni n g Electron Microscopy (SEM).

• 本文利用光学显微镜和扫描电镜对贺兰山珍稀濒危植物中的16种进行了花粉形态的观察和描述。