Solidago velutina
Solidago velutina, the threenerve goldenrod or velvety goldenrod, is a plant species native to Mexico and to the western United States. The species has been found in southwestern Oregon, east to the Black Hills of South Dakota, and as far south as México State in the central part of the Republic of México. It is classified as a member of Subsection "Nemorales". Recent taxonomic treatments have expanded the concept of "S. velutina" to include "S. californica" and "S. sparsiflora", long considered by many to be distinct species. These are now often treated as subspecies: Another infraspecific taxon is  also recognized by some authors: Description. "Solidago velutina" has a basal rosette of leaves that are still present at flowering time. The leaves get progressively smaller higher up on the stem. Each leaf has three prominent veins running from the base to near the tip. One plant can produce as many as 500 small yellow flower heads in a large, branching array at the top of the plant.