Solidago riddellii

Solidago riddellii, known as Riddell's goldenrod, is a North American plant species in the genus Solidago of the sunflower family. It grows primarily in the Great Lakes and eastern Great Plains of Canada and the United States. It is sometimes considered part of the genus Oligoneuron, but as a Solidago, included in the section Solidago sect. Ptarmicoidei, the flat-topped goldenrods.[2]

Solidago riddellii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Solidago
Section: S. sect. Ptarmicoidei
Species:
S. riddellii
Binomial name
Solidago riddellii
Frank
Synonyms[1]
  • Aster riddelii (Frank ex Frank) Kuntze
  • Oligoneuron riddellii Rydb.
  • Solidago amplexicaulis M.Martens

Description

Solidago riddellii is a perennial herb up to 100 cm (40 inches) tall, with a branching underground caudex. One plant system can produce as many as ten stems. The leaves are long and narrow, up to 25 cm (10 inches) long, produced along the stems as well as at the base. One stem can sometimes produce as many as 450 small yellow flower heads, each with 7–9 ray florets surrounding 6–10 disc florets.

Distribution and habitat

Riddell's goldenrod is known from Alberta and Ontario, Canada. The core of its range in the United States is in prairie regions of Minnesota, Iowa, southern Wisconsin, northern Illinois and Indiana, southern Michigan, and Ohio. There are reports of isolated populations in Georgia, Arkansas, and southwestern South Dakota.[3]

It grows in wet prairies and marshy areas.[2]

References
  1. "Solidago riddellii". The Global Compositae Checklist (GCC) – via The Plant List.
  2. Semple, John C.; Cook, Rachel E. (2006). "Solidago riddellii". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). 20. New York and Oxford – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  3. "Solidago riddellii". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
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