Lactuca graminifolia

Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Lactuca
Species:
L. graminifolia
Binomial name
Lactuca graminifolia
Michx. 1803
Synonyms[1]
  • Galathenium graminifolium (Michx.) Nutt.
  • Lactuca graminifolia var. arizonica McVaugh
  • Wiestia graminifolia (Michx.) Sch.Bip.

Lactuca graminifolia, the grassleaf lettuce[2] is a North American species of wild lettuce. It grows in Mexico, Central America, Hispaniola, and the southern United States from Arizona to Florida, Virginia and the Carolinas.[3][4][5][6][7]

Description

Lactuca graminifolia is a biennial herb in the dandelion tribe within the daisy family growing from a taproot a height of up to 150 cm (5 feet). The top of the stem bears a multibranched inflorescence with many flower heads. Each head contains 15-20 blue or purple ray florets but no disc florets. The fruit is a brown achene.[8]

References

  1. ↑ The Plant List, Lactuca graminifolia Michx.
  2. ↑ USDA, NRCS (n.d.). "Lactuca graminifolia". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 2 August 2015.
  3. ↑ Biota of North America Program 2014 county distribution map
  4. ↑ SEINet, Southwestern Biodiversity, Arizona chapter, Lactuca graminifolia Michx.
  5. ↑ Tropicos, specimen listing for Lactuca graminifolia Michx.
  6. ↑ Nash, D. L. 1976. Tribe XI, Cichorieae. En Nash, D.L. & Williams, L.O. (eds), Flora of Guatemala - Part XII. Fieldiana, Botany. 24(12): 440–454, 598–603
  7. ↑ Breedlove, D.E. 1986. Flora de Chiapas. Listados Florísticos de México 4: i–v, 1–246
  8. ↑ Flora of North America, Lactuca graminifolia Michaux, 1803.
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