Plants 50-200 cm (short to long-rhizomatous, sometime colonial). Stems 1-10(-20), ascending to erect, striate, glabrous or sparsely hairy. Cauline leaves: mid and distal crowded, blades broadly to narrowly elliptic, (35-)60-110(-150) × (5-) 13-25(-35) mm, ± reduced distally, not stiff, bases attenuate, margins entire, involute, finely ciliate, apices acuminate, faces glabrous or sparsely hairy, especially along veins abaxially, or densely hairy. Heads (3-)20-100(-300+). Peduncles 1-10 mm, moderately to densely canescent; bracts linear-lanceolate to elliptic. Involucres 3-5 mm. Phyllaries in 3-4 series, triangular-lanceolate, midveins not swollen, apices finely subulate, strigose. Rays (2-)5-10(-16); laminae (4-)7-10(-12.3) × (0.8-) 1.2-1.8(-2.7) mm. Disc florets (5-)11-26(-50); corollas 3.5-6 mm, lobes 2-3.2 mm, 60-75% of limb. Cypselae 1.4-3.2 mm, 4-6-ribbed, sparsely to densely strigose; pappi: outer 0.2-0.8 mm, inner 3.5-6.2 mm. 2n = 18.