Canada Goldenrod Solidago canadensis Aster family (Asteraceae) Description: This is a herbaceous perennial plant with a central stem that is 2-6' tall. Because of the wide distribution and the existence of several varieties, there is significant variability in the characteristics of local ecotypes.
Early Goldenrod occurs in mesic to slightly dry black soil prairies, sand prairies, gravel prairies, oak savannas, thickets, open areas of rocky upland woods, sunny waste areas, and abandoned fields. It is the earliest goldenrod to bloom in these habitats in Illinois.
Giant Goldenrod Solidago gigantea Aster family (Asteraceae) Description: This perennial wildflower is 3-7' tall and largely unbranched, except at the apex, where the flowering stalks occur. The central stem is light green or pale purple, terete, glabrous, and sometimes glaucous.
Solidago faucibus Wieboldt – gorge goldenrod; Solidago fistulosa P.Mill. – pine-barren goldenrod; Solidago flexicaulis L. – zigzag goldenrod, broadleaf goldenrod; Solidago gattingeri Chapman – Gattinger's goldenrod; Solidago gigantea Ait. – giant goldenrod, tall goldenrod, early goldenrod, smooth goldenrod; Solidago glabra Desf.
Solidago shortii, commonly known as Short's goldenrod, is a species of goldenrod in the sunflower family. The only known populations of Short's goldenrod occur around the Blue Licks Battlefield State Park area of Kentucky and Harrison-Crawford State Forest in Indiana.
Solidago virgaurea (European goldenrod or woundwort) is an herbaceous perennial plant of the family Asteraceae. It is widespread across most of Europe as well as North Africa and northern, central, and southwestern Asia (China, Russia, India, Turkey, Kazakhstan, etc.).