Anti-bacteria activity of Puraboeo rutescens and Lysionotus pauciflorus A New Species of Lysionotus (Gesneriaceae) from Yunnan Studies on Chemical Constituents of Lysionotus Four newly recorded Gesneraceous species from Vietnam Karyomorphology of four species in Ancylostemon, Briggsiopsis and Lysionotus (Gesneriaceae)