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.

Some sources say that greater celandine’s orange sap glows in the dark.

(photos by Kate St. John)