Yellow flowers with four petals. Intricately lobed, long leaves. Saffron-colored sap. Perennial.
Bronx Zoo in an "in-between" area.
Introduced from Europe. Apparently poisonous to chickens. May have medicinal use (as per Wikipedia page).
Lat: 40.85, Long: -73.88
Spotted on May 4, 2013
Submitted on May 12, 2013