Abstract:The pollen and leaf epidermis morphology of seven species of Physospermopsis in Apiaceae were observed by scanning electron microscope, the pollen morphology of three species of Physospermopsis was first reported, and the leaf epidermis micro-morphology of seven species was first reported, which provided reference materials for the research on the interspecific relationship and phylogeny of Physospermopsis. The results indicated that, (1) The pollens of seven species of Physospermopsis are rhombic, ellipsoidal, and sub-rectangular, the polar shapes include triangular, triangular-rounded and blunt triangular. The ratio of pollen polar axis to equatorial axis P/E is 1.22~2.07, and the size index is 16.59~19.26. The position of the aperture is the goniotreme, the equatorial sculptures are all cerebroid. (2) The contours of leaf epidermal cells of seven species of Physospermopsis are not clear, only the leaf epidermal cells of P. muliensis are regular polygonal, and the ornamentation of cuticle has irregular stripes. The stoma of P. delavayi, P. shaniana, P. rubrinervis and P. obtusiuscula are only distributed on the abaxial plane. The shape of the stoma is elliptical or ovate, the length of the stoma is 14.90~25.40 μm, and the width is 9.76~17.49 μm. According to the micro-morphological characteristics of leaf epidermis, the species of Physospermopsis can be distinguished. (3) P. obtusiuscula and P. kingdon-wardii are two independent species with the closest relationship. (4) Pollen morphology and leaf epidermis micro-morphology have important reference value for solving the interspecific classification of Physospermopsis.