Lapsana communis

Linnaeus

Sp. Pl. 2: 811. 1753

Treatment appears in FNA Volume 19. Treatment on page 257. Mentioned on page 255.
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Illustrator: Bee F. Gunn
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: Flowering Apr–Sep.
Habitat: Mesic woods, sheltered waste areas, roadsides, stream banks
Elevation: 50–1900 m

Distribution

V19-342-distribution-map.gif

Greenland, B.C., Ont., Que., Sask., Alaska, Ariz., Ark., Calif., Colo., Conn., Idaho, Ill., Ind., Ky., Maine, Md., Mass., Mich., Mo., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Eurasia.

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.

References

None.

Lower Taxa

No lower taxa listed.

Facts about "Lapsana communis"
AuthorDavid J. Bogler +
AuthorityLinnaeus +
DistributionGreenland +, B.C. +, Ont. +, Que. +, Sask. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Idaho +, Ill. +, Ind. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Mo. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. + and Eurasia. +
Elevation50–1900 m +
HabitatMesic woods, sheltered waste areas, roadsides, stream banks +
IllustratorBee F. Gunn +
Introducedtrue +
PhenologyFlowering Apr–Sep. +
Publication titleSp. Pl. +
Publication year1753 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse grained fna xml/V19-20-21/V19 342.xml +
SynonymsUndefined tribe Lactuceae +
Taxon familyAsteraceae +
Taxon nameLapsana communis +
Taxon parentLapsana +
Taxon rankspecies +
VolumeVolume 19 +