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| Lactuca | |
|---|---|
| |
| Lactuca tuberosa | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Cichorioideae |
| Tribe: | Cichorieae |
| Subtribe: | Lactucinae |
| Genus: | Lactuca L. |
| Synonyms[1] | |
| |
Lactuca, commonly known as lettuce, is a genus of flowering plants in the family Asteraceae. The genus includes at least 50 species, distributed worldwide, but mainly in temperate Eurasia.
Its best-known representative is the garden lettuce (Lactuca sativa), with its many varieties. "Wild lettuce" commonly refers to the wild-growing relatives of common garden lettuce. Many species are common weeds. Lactuca species are diverse and take a wide variety of forms. They are annuals, biennials, perennials, or shrubs.[2] Their flower heads have yellow, blue, or white ray florets. Some species are bitter-tasting.
Most wild lettuces are xerophytes, adapted to dry habitat types. Some occur in more moist areas, such as the mountains of central Africa.[2]
- ^ "Lactuca L." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 21 March 2024.
- ^ a b Lebeda, Aleš; Dolezalová, Ivana; Feráková, Viera; Astley, Dave (2004). "Geographical Distribution of Wild Lactuca Species (Asteraceae, Lactuceae)". The Botanical Review. 70 (3): 328–356. doi:10.1663/0006-8101(2004)070[0328:GDOWLS]2.0.CO;2.