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LettuceπΌ
Lactuca sativa
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An annual or biennial in the daisy family, native to the Mediterranean and West Asia. Japanese name is 'Chisha'. Many cultivars exist: head lettuce, leaf lettuce, and stem lettuce (celtuce).
Identification Points
- βHead types form a round, pale-green ball of leaves
- βWhite latex oozes from cut stems (Lactuca means 'milk')
- βSmall yellow ligulate flowers
Habitat
Cultivated (fields, greenhouses)
Season
Year-round (cultivated)
Morphological TraitsAI-estimated, needs verification
Leaf arrangement
Alternate
Leaf type
Simple
Growth form
Herb
Flower color
Yellow
Habitat
Cultivated
Phylogenetic Positionγγ―η§ β
Phylogenetic Position
Angiosperms > Eudicots > Core eudicots > Asterales > Asteraceae
Divergence Era
Late Cretaceous to Paleogene (approx. 80β70 million years ago)
Sources & References
πWikipedia ζ₯ζ¬θͺηβ
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AI-generated, needs verification