Krigia biflora

Krigia biflora, also known as two-flower cynthia or two-flower dwarf dandelion, is a species of plant in the sunflower family. It is native to North America, where it is found in central Canada (Manitoba and Ontario) and in the eastern, central, and southwestern United States.[2][3] This species is rare in Connecticut, and it is listed as a species of special concern.[4]

Krigia biflora
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Subtribe: Microseridinae
Genus: Krigia
Species:
K. biflora
Binomial name
Krigia biflora
Synonyms[1]
  • Hyoseris biflora Walter
  • Adopogon amplexicaule (Nutt.) Kuntze
  • Adopogon amplexicaulis (Michx.) Kuntze
  • Adopogon virginicum Kuntze
  • Cynthia amplexicaulis (Michx.) L.C.Beck
  • Cynthia falcata Standl.
  • Cynthia griffithii Nutt.
  • Cynthia virginica (L.) D.Don ex DC.
  • Cynthia viridis Standl.
  • Hyoseris amplexicaulis Michx.
  • Hyoseris minor J.F.Gmel.
  • Hyoseris prenanthoides Willd.
  • Krigia amplexicaulis (Michx.) Nutt.
  • Luthera virginica (L.) Sch.Bip.
  • Tragopogon virginicus L.
  • Troximon virginicum (L.) Gaertn.

Krigia biflora is an erect perennial growing 18 to 32 inches (450–800 mm) tall. One plant can have 20 or more flower heads, very often 2 per flower stalk, each head with 25-60 yellow to orange-yellow ray flowers about 1 to 1.5 inches (25–38 mm) across. There are no disc flowers. It can be an aggressively spreading plant. It grows in a variety of habitats and soils and blooms in late spring to late summer. The name of the plant consists of two words: Krigia for David Krieg, the German physician who first collected this plant in Maryland; and biflora, meaning two-flowered.[5][6]

References
  1. The Plant List, Krigia biflora (Walter) S.F.Blake
  2. United States Department of Agriculture plants profile
  3. Biota of North America Program 2014 county distribution map
  4. Connecticut Botanical Society
  5. Wisconsin Plants Archived 2013-05-24 at the Wayback Machine
  6. Flora of North America, Krigia biflora (Walter) S. F. Blake, 1915. Orange dwarfdandelion
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