Lactuca graminifolia

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]

Lactuca graminifolia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Tribe: Cichorieae
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 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. "Lactuca graminifolia". Natural Resources Conservation Service PLANTS Database. USDA. 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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