Lechea tenuifolia Michx.
Family: Cistaceae
narrow-leaved pinweed, slender-leaved pinweed
[Lechea tenuifolia var. occidentalis Michx.]
Lechea tenuifolia image
from USDA Plants website  
Lechea tenuifolia image
University of Wisconsin - Madison (WIS-VP)  
Etymology: Lechea: for John Leche, Swedish botanist
Plants: erect, perennial, 4"-12" tall forb
Leaves: very narrow, at least 10 times longer than wide
Flowers: red, 3-parted, stalks very hairy; inflorescence a branched, spike-like cluster (panicle) 1/2 or more of plant height
Habitat: dry; upland woods, barrens
Conservation Status: Native