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  • COMMON NAME: milk thistle, prickly lettuce.
  • ARABIC: خص الحمار
  • BOTANICAL NAME: Lactuca serriola L.
  • SYNONYMS: L. scariola L.
  • FAMILY: ASTERACEAE
  • KIND: Native
  • EMIRATE: Abu-Dhabi , Fujairah
  • GROWTH FORMS: Herbs
  • HABITATS: Terrace Sandy
  • TYPES: Annual Biennial
Flora of the United Arab Emirates V1 & 2, Fawzi M.Karim, Nael M.Fawzi; reviewed by Fatima Al-Ansary. Al-Ain: United Arab Emirates University, 2007. V.V. Byalt, V.M. Korshunov, M.V. Korshunov. Cadaster of the Flora of Fujairah Emirate (United Arab Emirates). Al Fujairah 2021. https://www.floraofqatar.com/lactuca_serriola.htm
Annual or biennial herb, 40-120 cm in height. Stems erect, terete, branched, glossy, glabrous, yellowish, leafy below, ending in a long and broad panicle. Leaves 5-15 cm long, 1-4 cm broad, rigid, coriaceous, sessile, oblong to obovate, in outline runcinate or sinuate-lobed, hairy, margin denticulate, often sagittate-clasping at base. Heads many flowered, solitary or in clusters. Involucre 0.5-1.5 cm long linear, many rows. Florets 5-10 mm long, yellow, greyish-purple on the outside. Achenes 2.5-3.0 mm long, brown, obovate-oblong, 5-7 (9), striate on each side, with long beak. Pappus white hairs, one row. Flowering from April to September.
Cultivated fields and damp places.
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