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  • COMMON NAME: White Thistle, Yellow distaff-thistle.
  • ARABIC: شويكة، شوك الجمل
  • BOTANICAL NAME: Atractylis carduus (Forssk.) C.Chr.
  • SYNONYMS: A. flava Desf.
  • FAMILY: ASTERACEAE
  • KIND: Native
  • EMIRATE: Abu-Dhabi , Sharjah , Fujairah
  • GROWTH FORMS: Herbs
  • HABITATS: Sandy
  • TYPES: Perennial
  • REMARKS: Some specimens lack the woolly hairs.
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. https://www.floraofqatar.com/atractylis_carduus.htm M.V.D jongbloed, G.R. Fuelner, B. Boer, A.R. Western. the comprehensive guide to the wild flowers of the United Arab Emirates. Environmental research and wildlife Development agency, Abu Dhabi, 2003.
Perennial, 10-35 cm high, a depressed woolly, branching from the base. Stems ascending or brocumbent, simple or branched. Leaves leathery, lanceolate-linear, 2-6 cm long, 1-2 cm wide, sinuate-lobed, with short prickles. Heads yellow-flowered, solitary, 2-3 cm in diameter, ovate, with involucre, 1-2 cm wide, uaually radiate. Bracts of the outer involucre similar to cauline leaves, in 1 row, about twice as long as the head; inner involucral bracts woolly, broadly ovate to linear-lanceolate, with a spiny tip. Achenes with pappus, about twice its length. Flowering from February to April.
Calcareous sandstone hills, sandy soil and roadsides.
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