Botanical name: Tricholepis elongata Family: Asteraceae (Sunflower family)
Synonyms: Carduus elongatus, Centaurea alba
Yellow Cotton Thistle is a perennial herb, 2-5 ft tall, velvet-hairy or scaberulous, sparingly branched. Flower-heads are 1.2-5.0 cm across. Involucral bracts are needle-shaped, tips fringed with hairs. Receptacular bristles are longer than achenes. Florets are yellow, 1.2-1.6 cm long. Leaves very variable in shape and size, linear, oblong-lanceshaped, elliptic or obovate, pointed or blunt at tip, toothed, sawtoothed or distantly runcinate, 5-10 x 1.5-4.5 cm, covered with raised points on the surface or scaberulous or velvet-hairy, stalkless. Achenes narrowly oblong, about 5 mm long, pointedly 5-angled, slightly broader upwards, flat, smooth. Pappus hairs pale brown, about 6 mm long, in many rows, pale brown, shining. Yellow Cotton Thistle is found in W. Himalayas, at altitudes of 1300-2800 m, in Jammu & kashmir, Himachal Pradesh and Uttarakhand. Flowering: May-September.
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The flower labeled Yellow Cotton Thistle is ...