Perennial herb, roots with slender tubers, rootstock slender, woody, flowering stem solitary, simple, erect to 300-750 mm, glandular, loosely cobwebby woolly, closely leafy but more distantly so above. Radical leaves often wanting, when present ±100-300 x 5-10 mm, roughly ? wiry petiole, blade linear-lanceolate, triplinerved, margins weakly revolute, both surfaces scabrid, hairs often only near margins and above veins, often cobwebby-woolly below; cauline leaves mostly 40-170 x 1-5 mm, smaller and more distant upwards and passing into bracts, linear-lanceolate or linear, acuminate, base broad, clasping, shortly decurrent, margins strongly revolute, upper surface and midrib below scabrid, often some woolly hairs as well. Heads homogamous, campanulate, 4-5 x 3-4 mm, many in congested corymbose clusters arranged in a spreading corymbose panicle. Involucral bracts in ±5 series, graded, loosely imbricate, about equalling flowers, not radiating, tawny, pellucid or subopaque, tips obtuse, or rarely subacute, somewhat crisped. Receptacle with fimbrils much exceeding ovaries. Flowers 17-30. Achenes 1.5 mm long, glabrous. Pappus bristles many, about equalling corolla, scabrid, bases cohering strongly by patent cilia, lightly fused as well.
More
Perennial herb, 0.30-0.75 m high. Radical leaves 100-300 x 5-10 mm, petiolate, linear-lanceolate, both surfaces scabrid, often cobwebby-woolly below; cauline leaves 40-170 x 1-5 mm, smaller upwards, linear-lanceolate or linear, margins strongly revolute, upper surface and midrib below scabrid. Heads campanulate, in congested corymbose clusters, arranged in corymbose panicle. Flowers yellow; involucral bracts tawny.