IUCN threat status:

Not evaluated

Comprehensive Description

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Description

This native perennial plant is 1½–2½' tall, branching frequently. The stems are usually round and covered with white hairs. The alternate leaves are whitish or yellowish green, and up to 4" long and 3" across. They are cordate or broadly lanceolate, with a well-rounded base. The leaf margins are horizontally wavy and irregular, and often undulate vertically as well. Both the leaves and their petioles are covered with fine white hairs, and have a rather soft texture. These hairs are sometimes glandular. A single drooping flower appears at the juncture of two divergent stems. It is up to ¾" across, and consists of a spreading tubular corolla that is pale yellow and divided into 5 very shallow lobes. There are 5 brownish purple splotches near the base of the corolla and 5 prominent dull yellow anthers. The pedicels of the flowers exceed 1/5" when fully developed, while the calyx has triangular teeth; they are both covered with fine white hairs. Later, the flowers are replaced by heart-shaped husks that are up to ¾" long, each containing a single fruit. The husk of the fruit is initially green, but later turns brown, and is indented at the base. The spherical fruit is about ½" across and becomes yellow when mature. It contains numerous light brown seeds that are elliptical and granular. On a typical mature plant during the summer, there are several buds, flowers, and husked fruit in all stages of development. The blooming period occurs during the summer and lasts about 2 months. The root system consists of deep fleshy rhizomes, which spread the plant vegetatively. Cultivation

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© John Hilty

Source: Illinois Wildflowers

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