Abstract: In the present paper pollen grains of 8 species in the genus Dracaena (Liliaceae) from China were examined by scanning electron microscope, are reported here for the first time. As a result, four types of the pollen exine sculpture are distinguished: (1) foveolate, D. cochinchinensis and D. menglaensis; (2) regulate, D. cambodiana and D. terniflora; (3) reticulate, D. gracilis, D. angustifolia and D. ensifolia; (4) tuberculate-baculate, D. hokouensis. The differences in pollen morphology of Chinese Dracaena can serve as characters for delimitating species.

Key words: Dracaena

摘要： 对国产百合科龙血树属（Dracaena）8种植物的花粉形态进行了研究。根据花粉外壁纹饰可分为穴状、皱波状、网状和瘤棒状4类。结果表明：该属各种之间在花粉外壁纹饰上的差异可为种的区分提供依据。

关键词: 龙血树属, 花粉形态