Compilation
Lapsana communis

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Name

Identification
Lapsana olympica P.Candargy [family COMPOSITAE ] Verified by Not on sheet., Lapsana communis [family COMPOSITAE ] (stored under name); Verified by Not on sheet.,
Related name
  • Lapsana olympica
  • Lapsana grandiflora
  • Lapsana adenophora
  • Lapsana intermedia
  • Lapsana pisidica
  • Lapsana peduncularis
  • Lapsana macrocarpa
  • Lapsana communis
  • Lapsana pubescens

Flora

Entry for Lapsana communis Linnaeus [family COMPOSITAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 19,
Names
Lapsana communis Linnaeus [family COMPOSITAE], Sp. Pl., 2: 811. 1753
Treatment Author(s)
David J. Bogler
Information
Leaves: blades 1–15(–30) × 1–7(–10) cm. Heads 5–25(–100+). Calyculi: bractlets keeled in fruit, 0.5–1 mm. Involucres 5–10 × 3–4 mm. Phyllaries 3–9 mm. Corollas 7–10 mm. Cypselae 3–5 mm. 2n = 12, 14, 16.
Phenology
apr-may (spring), jun-aug (summer), sep (fall)
Altitude range
50–1900 m;
Distribution
Eurasia.USA AlaskaUSA Ariz.USA Ark.USA Calif.USA Colo.USA Conn.USA IdahoUSA Ill.USA Ind.USA Ky.USA MaineUSA Md.USA Mass.USA Mich.USA Mo.USA N.J.USA N.Y.USA N.C.USA N.Dak.USA OhioUSA Okla.USA Oreg.USA Pa.USA R.I.USA Tenn.USA Tex.USA UtahUSA Vt.USA Va.USA Wash.USA W.Va.USA Wis.Canada GreenlandCanada B.C.Canada Ont.Canada Que.Canada Sask.
Discussion
Lapsana communis is widely distributed in North America. It is easily recognized by the abruptly constricted lyrate leaves with relatively large terminal lobes, heads of relatively small flowers with yellow corollas, keeled phyllaries, and epappose cypselae. It is aggressively weedy and often found in shady disturbed sites. The milky juice of L. communis is said to be soothing to sensitive skin, particularly on the nipples of nursing mothers.
Native/Introduced
introduced;

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