摘 要 ：本文对重楼属(Paris L.) 18个种和变种或变型的花粉形态进行了光学显微镜和电镜的观察和初步比较研究。就所观察过的种类看，花粉粒为扁球形，极面观椭圆形。左右对称。具一远极沟。外壁两层，外层厚于或等于内层。外壁纹饰有穴状、网状和皱一网状之分。不同的种类，其花粉大小和外壁纹饰均或多或少有所不同，其中有些种类的外壁纹饰比较特殊,可以作为区分种类甚至作为分组的依据或参考。
Abstract:Pollen grains of 18 species or varieties of the genus Paris ( Trilli-aceae)have been examined under light microscope and scanning electron microscope. All the species examined are characterized in having oblate and anacolpate pollen grains. The size of the pollen grains ranges from 27 to 30 um in the polar axis and from 48 to 55 um in the longest equatorial axis. The exine is twolayered, with sexine equal to or thicker than nexine in thickness. The ornamentations of the exine are foveolate, reticulate and rugulato-reticulate according to different species under scanning electron microscope.The ornamentation of the exine in Paris axialis and P. forrestii is more diverse and complicated than in any other species of the genus. These two species can be grouped together on the basis of pollen morphology, especially the simila-rities between their exine ornamentations in having muri which are characterized by possession of clavate, nodose and tuberculate or verrucate structures, which gives support to Li Hen who placed the two species in the same section of Axiparis H. Li. But how to treat those species with foveolate exine ornamentation is still a problem and needs futher study by absorbing other subjects.