Green-and-Gold

Chrysogonum virginianum

''Chrysogonum virginianum'', the golden-knee, green and gold, or goldenstar, is a North American species of plants in the sunflower family. It is native to the eastern United States from New York State and Rhode Island south to Louisiana and the Florida Panhandle.
Green-and-Gold (Chrysogonum virginianum) Growing on a woodland trail. Chrysogonum virginianum,Geotagged,Spring,United States

Naming

The species is sometimes grown as a perennial ornamental because of its showy flowers. It is usually propagated by root cuttings.

Formal botanical varieties of wild populations:
⤷  ''Chrysogonum virginianum'' var. ''australe'' H.E.Ahles - Florida, Georgia, Alabama, Mississippi, Louisiana
⤷  ''Chrysogonum virginianum'' var. ''brevistolon'' G.L.Nesom - Georgia, Alabama, Carolinas, Tennessee, Kentucky
⤷  ''Chrysogonum virginianum'' var. ''virginianum'' - from New York to South Carolina, west to Kentucky + Ohio

''Chrysogonum virginianum'' is an herb up to 50 cm spreading by means of rhizomes. Flower heads are produced singly or in pairs, yellow, with both ray florets and disc florets.

References:

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderAsterales
FamilyAsteraceae
GenusChrysogonum
SpeciesC. virginianum