Yellow Passionflower

''Passiflora lutea'', the yellow passionflower, is a flowering plant in the family Passifloraceae, native North America, in the eastern and south-central parts of the United States from Pennsylvania west to Kansas, and south to Florida and Texas. It is the northernmost species of ''Passiflora'', occurring slightly further north than ''P. incarnata'', and tolerant of winter temperatures down to −15 °C, and even −30 °C for short periods.