[Goldenrods: The Genera Euthamia and Solidago in the Columbia River Gorge of Oregon and Washington]

Giant Goldenrod, Late Goldenrod, Smooth Goldenrod

Solidago gigantea

Synonyms: Aster latissimifolius var. serotinus, Solidago gigantea ssp. serotina, Solidago gigantea var. leiophylla, Solidago gigantea var. pitcheri, Solidago gigantea var. serotina, Solidago gigantea var. shinnersii, Solidago xleiophallax, Solidago pitcheri, Solidago serotina, Solidago serotinoides

The photo at left shows a close-up of the flower heads of late goldenrod as seen along the banks of the Deschutes River in the eastern Columbia River Gorge........September 1, 2007. Each flower head typically has on average about 13 ray flowers, although this occasionally varies from 10-17 rays. The photo at right shows late goldenrod in bloom at Ferry Springs, Deschutes River State Recreation Area......November 21, 2023.

The photo above shows a close-up of a panicle of flower heads of late goldenrod as seen along the banks of the Deschutes River in the eastern Columbia River Gorge........September 1, 2007.

The photo above shows a close-up of the lower stem leaves of late goldenrod as seen along the banks of the Deschutes River in the eastern Columbia River Gorge.......September 1, 2007. The leaves tend to be completely glabrous.

The photo above shows late goldenrod as seen along the banks of the Deschutes River in the eastern Columbia River Gorge........September 1, 2007. The stems tend to be glabrous or glaucous below the inflorescence, while there may be a few hairs within the inflorescence.

Additional photos of late goldenrod as seen along the banks of the Deschutes River in the eastern Columbia River Gorge.......July 27, 2011.

Late goldenrod still in bloom along the east bank of the Deschutes River about one-half mile south of the Columbia River..........November 1, 2014.

Late goldenrod blooming at left along the western shoreline of the Deschutes River about one-half mile upstream of the Columbia River.........October 12, 2011. A very late goldenrod blooming at right along the eastern shoreline of the Deschutes River about one-half mile upstream of the Columbia River.........January 4, 2019.

Paul Slichter