Abstract: The floral microcharacters in Subtrib. Tussilagininae are investigated in the paper. They include anther apex sterile tissue, endothecium type, anther base, anther collar, style apex, style hair, stigmatic configuration and carpodial cell rows. Furthermore, the evolutionary trends of the floral microcharacters in Subtribe Tussilagininae are discussed based on the obtainable data. The results indicate:Nannoglottis seems to be an isolated genus of the Astereae;Subtrib. Tephroseridinae is an intermediate group between Subtrib. Tussilagininae and Subtrib. Senecioninae;and based on the floral microcharacters, 13 genera of Subtrib. Tussilagininae of the eastern Asia can be aggregated into 6 genetic groups.

Key words: Asteraceae, Senecioneae, Tussilagininae, Tephroseridinae, Nannoglottis, Floral microcharacters