Branches leafy, subterete, sulcate, thinly setose or at length glabrous, with internodes of 2–3 in. Leaves linear-oblong, acute, obscurely or broadly crenate-denticulate, narrowed at base into winged petiole which forms a short strongly-nerved ochreate sheath round the stem, scabrid above and below with stiffish hairs or setæ; 4–5 in. long; 1/2– 3/4 in. broad. Capitula collected in a solitary terminal head, 1–1 1/2 in. diam., surrounded and much overtopped by the sessile upper leaves broadly dilated at base, 3–4-flowered; inner scales of involucre linear-oblong, acuminate, outer lanceolate or ovate-anceolate, rigid or coriaceous, very acute, sheathed, at least in part, by ovate-lanceolate coriaceous scales, acuminate and conduplicate above, which equal or overtop the florets. Receptacle narrow. Corolla not seen. Achenes subtrigonous or obtusely angular, clothed with short whitish subappressed hairs, and with about 10 obscure costæ, scarcely perceptible until the hairs are removed. Pappus 2-seriate, setaceous, setæ ∞, subequal, minutely scabrid.
