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: Solidago velutina subsp. californica (Nutt.) Semple - California, Oregon Solidago velutina subsp. sparsiflora (A.Gray) Semple Another infraspecific taxon is also recognized by some authors: Solidago velutina var. nevadensis (A. Gray) C.E.S. Taylor & R.J. Taylor...read more on Wikipedia.