Agalinis tenuifolia
From Nearctica
Identification: Flowers about 0.5 inches in length, pink to lavender in color. Petals in a tubular corolla with 5 free petal lobes. Throat of flower with dark spots. Calyx with small, sharp teeth. Flower stalks long, much longer than the calyx. Leaves narrow, grass-like, in opposite pairs. Plant 1 to 3 feet in height.
Distribution: West Ontario in the west to New England in the east, southward to Georgia and Texas. Also occurs through central North America.
Habitat: Slender Agalinis is found in dry woods, and dry, open fields.
Flowering period: August to October.