Abstract: Field studies in the Lamagetou Nature Reserve , Mianning Xian , Sichuan Province , in the summer of 2005 revealed a particularly rich and diverse flora . One particularly noteworthy plant growing in openings in the forest, at woodland margins and on exposed slopes, was the recently described Meconopsis wilsonii Grey-Wilson subsp. wilsonii (Papaveraceae) , a species previously known only from the type collection and last collected in 1908 , nearly 100 years ago.

Key words: Papaveraceae