Tuberous geophyte, with erect or straggling stem, up to 0.6 m tall, woolly at crown. Leaves variously developed at flowering, oblanceolate to obovate, 30-100(-200) x 20-50(-100) mm, lower often narrowed below and with woolly axils, upper leaves smaller and becoming bract-like, sometimes stem-clasping, entire or with scattered small teeth or incised with the lobes apiculate. Flowerheads 25-102 mm loose corymbs (up to 14-flowered if axillary buds develop), radiate; ray florets mauve to purple; disc florets mauve or yellow; involucre campanulate, 8-10 mm diam., bracts 8-12, 6-12 mm long. Cypselas 3-5 mm long, pubescent; pappus 5-8 mm long.
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