Plant Form annual herb to 150 cm tall, with hollow stem. Leaves dissected, with acute apex, basally eared and spiny, 40-200 x 20-70 mm. Flowerheads yellow, of dandelion type with only ligulate florets, 5-6 mm diam. Fruits flattened, ribbed, 2-3 mm long, with pappus (parachuting hairs) ca. 8 mm long. Distinguishing Features Leaves more leathery than in Sonchus oleraceus.
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