Solidago rigida L.
Family: Asteraceae
rigid goldenrod, stiff goldenrod
Solidago rigida image
from USDA Plants website  
Etymology: Solidago: from Latin solido, meaning "to make whole or heal" and a reference to the supposed, medicinal qualities of these plants
Plants: erect, perennial, 1'-5' tall forb; stems densely hairy; forming clumps
Leaves: stiff, gray-green, rough, oval to oblong, hairy on both side; largest, long-stalked leaves toward the bottom, upper leaves mostly stalkless
Flowers: head with 7-14 yellow rays up to 1/5" long, disk to 1/3" wide; inflorescence 2"-10" wide, dense, flat-topped cluster of rather large heads; blooms July-Oct.
Fruits: dry seed on fluffy pappus
Habitat: full to partial sun; dry to moderate moisture; prairies, woods; in sandy, loamy soil
Conservation Status: Native