Greater celandine (Chelidonium majus) is a Eurasian perennial in the poppy family that’s blooming now in Schenley Park. Though it resembles our native celandine-poppy it’s not as particular about habitat. It can be invasive.
To be sure it’s in the poppy family, break a leaf. Greater celandine has orange latex sap.
Don’t put the evidence in your pocket. The “orange juice” can leave a stain.
(photos by Kate St. John)