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.