Yellow passionflower (Passiflora lutea) may be just as common in this area if not more so but due to it's small and inconspicuous flowers it just doesn't grab the attention of incarnata.
is a climber with loads of blue flowers and its now infested with butterfly larve.
Passifloraceae is a family of flowering plants, containing about 530 species classified in around 18 genera. They include trees, shrubs, lianas and climbing plants, and are mostly found in tropical regions .