Chrysogonum virginianum

"Green-and-gold" redirects here. For the national colours of Australia, see green and gold.

"Goldenstar" redirects here. For other plants known as goldenstar, see Bloomeria.

Chrysogonum virginianum, the golden-knee,^[2] green and gold,^[3] or goldenstar, is a North American species of plants in the family Asteraceae. It is native to the eastern United States from New York State and Rhode Island south to Louisiana and the Florida Panhandle.^[4][5]

Chrysogonum virginianum
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Chrysogonum
Species:	C. virginianum
Binomial name
Chrysogonum virginianum L.
Synonyms[1]
Chrysogonum australe Alexander ex Small, syn of var. australe Diotostephus repens Cass., syn of var. brevistolon

The species is sometimes grown as a perennial ornamental because of its showy flowers. It is usually propagated by root cuttings.^[6]

Varieties^[7]

Formal botanical varieties of wild populations:

• Chrysogonum virginianum var. australe (Alexander ex Small) 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 (20 inches) spreading by means of rhizomes. Flower heads are produced singly or in pairs, yellow, with both ray florets and disc florets.^[8]

• 
  Leaf closeup
• 
  A picture of Chrysogonum virginianum var. australe