Common Spring Wildflowers in the Smokies. There are over 1,500 kinds of flowering plants that grow in Great Smoky Mountains, more than in any other American national park. Jack-in-the-Pulpit is a unique early spring wildflower. It has a 'Jack' standing erect at his pulpit. At the base of 'jack' is a cluster of tiny flowers and a piece of the flower is green or dark purple forms the pulpit by curving over to provide a canopy. Jack-in-the-Pulpit is commonly seen throughout the park. Jack-in-the-Pulpit - Arisaema triphyllum.