This section is from the book "Harper's Guide To Wild Flowers", by Caroline A. Creevey. Also available from Amazon: Harper's Guide To Wild Flowers.
Glaucium flavum - Family, Poppy. Color, yellow. Sepals, 2. Petals, 4. No style, but a 2-lobed stigma, the lobes hollowed out. Fruit, a rough pod, 6 to 10 inches long, made 2-celled by a false partition. Flowers, axillary and terminal. Leaves, clasping the stem, pinnately cleft below, lobed and toothed above. Stem, 2 to 3 feet high. When broken it emits a yellowish juice like the celandine, of which it is a near relative. Summer.
In dry fields and waste places from Long Island to Maryland and Virginia near the coast. Rather rare.
 
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