Abstract: The anatomy of secondary phloem and periderm in eight host species of Kerria yunnanensis Ou et Hong is described, the eight species include Flemingia macrophylla (Willd.) Merr., Pueraria wallichii DC., Ficus variegata W. var. chlorocarpa King, Alblizia bract eat a Dunn, Samanea saman (Jacq.) Merr., Butea monosperma (Lam.) Taub., Ziziphus mauritiana Lam. and Schleichera oleosa (Lour.) Oken. The axial system of their secondary phloem consists of sieve tubes, companion cells, phloem parenchyma cells and fibres.

Key words: Kerria yunnanensis