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DescriptionPerennial herbs (our spp.). Leaves opposite, very rough to the touch (in ours). Capitula terminal, solitary or in lax racemes, sometimes axillary, radiate, yellow (in ours), white, lilac or purple. Phyllaries 2-3-seriate. Receptacular scales clasping the florets, narrowly oblong to obovate. Achenes obovoid, bilaterally flattened, pubescent. Pappus a laciniate cupule, often with 2 barbellate setae in addition.