Research progress in Laggera medicinal plants Research progress on chemical constituents of Laggera plants in China Effect of Yunnan herb Laggera pterodonta against influenza A(H1N1)virus in vitro THREE NEW SESPUITERPENOLS FROM LAGGERA PTERODONTA Chemical Composition and Antimicrobial Activities of Essential Oils of Laggera pterodonta Collected in Four Different Locations in Yunnan, China* THE FLAVONOLS FROM LAGGERA PTERODONTA FOUR NEW SESQUITERPENOIDS FROM LAGGERA PTERODONTA FIVE NEW EUDESMANE DERIVATIVES FROM LAGGERA PTERODONTA THE STRUCTURE OF PTERODONTETRAOL FROM LAGGERA PTERODONTA Chemical constituents of Laggera pterodonta