Krigia biflora

{{Short description|Species of flowering plant}}

{{speciesbox

|image = Krigia biflora Bluegrass.jpg

|genus = Krigia

|species = biflora

| status = G5

| status_system = TNC

|authority = (Walter) S.F.Blake 1915

|synonyms_ref = [http://www.theplantlist.org/tpl1.1/record/gcc-21406 The Plant List, Krigia biflora (Walter) S.F.Blake]

|synonyms =

• 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, also known as two-flower cynthia or two-flower dwarf dandelion, is a species of plant in the family Asteraceae. 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.[http://plants.usda.gov/core/profile?symbol=KRBI United States Department of Agriculture plants profile][http://bonap.net/MapGallery/County/Krigia%20biflora.png Biota of North America Program 2014 county distribution map] This species is rare in Connecticut, and it is listed as a species of special concern.[http://www.ct-botanical-society.org/galleries/krigiabifl.html Connecticut Botanical Society]

Krigia biflora is an erect perennial growing {{cvt|450-800|mm|in|0}} tall. One plant can have 20 or more flower heads, very often two per flower stalk, each head with 25–60 yellow to orange-yellow ray flowers about {{cvt|1|-|1+1/2|in|mm|order=flip|round=5}} 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.[http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=KRIBIF Wisconsin Plants] {{webarchive|url=https://web.archive.org/web/20130524183457/http://wisplants.uwsp.edu/scripts/detail.asp?SpCode=KRIBIF |date=2013-05-24 }}[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242416710 Flora of North America, Krigia biflora (Walter) S. F. Blake, 1915. Orange dwarfdandelion ] Its habitats include streams, meadows, and moist prairies.