Solidago gigantea L. - Giant Goldenrod


 

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Solidago gigantea - (image 1 of 3)

 

Taxonomy

Family: Asteraceae

Habitat

Moist open places, including shaded floodplains, near stream and ponds, moist prairies, and fens.

Associates

 

 Distribution

Nova Scotia and Quebec west to British Columbia, south GA to NM.

Morphology

Herbaceous perennial to 2 m high. Leaves tri-nerved, lowest leaves about the same size as the lower, abruptly reduced and bracteate in the inflorescence, not leafy in axils, subtending leaves not exceeding the inflorescence. Heads in terminal panicles. Flowers bright yellow; involucres 2-3 mm, stem nearly or quite glabrous below the inflorescence.

Notes

Flowers August to September

Wetland indicator: Facultative Wetland

Very much like S. canadensis but mostly glabrous below the inflorescence. Also called Smooth Goldenrod or Late Goldenrod, it is synonymous with S. serotina.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.

The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 


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 Michael Hough 2009