Sub-category: Poppy family
Plants grow about 1.5 feet tall from rhizomes. Leaves are pinnately cut and lobed. They grow from the base and off the flowering stems. Apart from its normal sap, Stylophorum diphyllum produces a yellow-orange latex that stains. Flowers are bright yellow. Members of the poppy family are characterized by their production of latex, which in the case of the celandine-poppy is yellow. The flowers have 4 yellow petals, two soon falling sepals, many yellow-orange stamens, and a single knobby stigma. They appear in umbels of one or more flowers. After fertilization, a bristly blue-green pod hangs below the leaves. Seeds with white elaiosomes ripen in midsummer and the pod opens by four flaps.
Blooms from early spring to early summer.