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Also called wood poppy.
In 🇨🇦 🇺🇸 North America, do not confuse with very-similar-named (and very-similar-looking!) greater celandine poppy Chelidonium majus. Although members of separate genera, both are part of poppy family Papaveraceae.
And do not confuse either with very-similar-named lesser celandine or fig buttercup Ficaria verna. Although together the three species are members of two separate families, all three are part of barberry/buttercup/poppy order Ranunculales.
Native to central and eastern 🇨🇦 🇺🇸 Canada and USA. 🗺 Map by county (🇺🇸 USA-48) (color key).
Uses by native peoples(Ethnobotany database)
🔍︎ 🔍︎ images Discover Life Encyclopedia of Life Michigan Flora (Minnesota) Wildflower Garden Missouri Botanical Garden Missouri Plants Native Plant Trust Flora of North America USDA PLANTS db Wikipedia
🏠︎ ⚘ ❀ flowers 🌾︎⚶⚘ ☙ terrestrial herbaceous plants
greater celandine poppy Chelidonium majus lesser celandine or fig buttercup Ficaria verna