Lactuca canadensis

Lactuca canadensis

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
Genus: Lactuca
Species: L. canadensis
Binomial name
Lactuca canadensis
L.
Synonyms

Lactuca canadensis is a species of wild lettuce known by the common names Canada lettuce, Canada wild lettuce, tall lettuce,[1] and Florida blue lettuce.[2] Its true native range is not clear,[1] but it is considered to be a native of the eastern and central parts of North America. It naturalized in the western part of the continent as well as in Eurasia.[3][4]

Lactuca canadensis is a generally biennial herb in the daisy family growing from a taproot to maximum heights of 50–200 cm (20-80 inches) or more. The leaves are deeply lobed and occasionally toothed. The top of the stem bears an inflorescence with many flower heads, each up to 1 cm (0.4 inches wide when open. The heads have many pale yellow ray florets but no disc florets. The fruit is a dark-colored achene about half a centimeter (0.2 inches) long with a white pappus.[5]

References

  1. 1 2 Lactuca canadensis. Germplasm Resources Information Network (GRIN).
  2. ↑ Lactuca canadensis. ITIS.
  3. ↑ Lactuca canadensis. The Jepson eFlora 2013.
  4. ↑ Biota of North America Program 2014 county distribution map
  5. ↑ Flora of North America, Lactuca canadensis

External links

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