Yellow Passionflower may not have as large and obvious a blossom as its purple flowered relative, but it has its own way of standing out in our landscape. For me, the smaller flowers and leaves of this common vine are far less overwhelming than many other vines, adding a bit of elegance.
The standout feature of passionflowers is their blossom. A dramatic skirt of sepals, petals, and long, finger-shaped structures surround the equally dramatic central pistil and stamens. The common name reflects an interpretation of the Christian crucifixion story. Purple Passionflower, Passiflora incarnata, is also commonly known as Maypop, for its large, hollow fruit that “pops open” when crushed against your sister’s head. Both species are common throughout the southeastern U.S.
But although the blossoms and other features of Yellow Passionflower, Passiflora lutea, are smaller, they are no less beautiful. The arrangement of multiple flowers and developing fruit along the vine is dramatic. Unlike Purple Passionflowers, Yellow Passionflower blossoms unfold at the end of long petioles, that make the flowers seem to float in the air. These blossoms are also daintier than their large cousin. Combined with long tendrils that hold the vines to the shrubs they grow on and the trilobed and sometimes variegated leaves, it is hard not to pause and stare at this plant.
Both species of passionflower are also host to several butterflies across their range. For the northern Gulf Coast, these include the common Gulf Fritillary, Dione vanilla, and the Variegated Fritillary, Euptoieta claudia. On occasion, the Zebra Longwing butterfly, Heliconius charithonia, has been reported using these plants in Florida and Georgia, and could well be found in other southern states, including Mississippi and Alabama. The Butterflies and Moths of North America website is a great source of information on this group of insects (https://www.butterfliesandmoths.org/).
There are of course other insects and creatures that use or depend on Yellow Passionflower, as a host plant, a source of pollen and nectar, and the tiny black fruit. An exciting recent relationship is being investigated by the nonprofit organization Applied Community Ecology (https://appliedcommunityecology.org/), located in Atlanta, Georgia. The organization hosts the Passionflower Bee Project that is encouraging observations that help it learn more about this species (https://appliedcommunityecology.org/yellow-passionflower-project/), Anthemurgus passiflorae, that apparently uses the pollen of this plant to feed its young.
Yet another example of how much we do not know about our natural world. But that does not stop us from enjoying simple observations of plants and animals around us. So, take the time to see if you have Yellow Passionflower in your neighborhood. The plant is easy to grow and would make a great addition to any trellis or mailbox. Gulf Fritillaries will come!!! And although they will chew much of your vine right before your eyes, these plants recover quickly and continue to add diversity to your landscape.
Hope to see you in our great outdoors!
