branches glabrous or rarely pilose with a few weak hairs when young; leaves slender, 1/2– 3/4 in. long, trifurcate in the upper 1/2 or 1/3, very rarely a few bipinnately divided, glabrous or pilose with a few scattered weak hairs; ultimate segments 2–4 lin. long, cylindric, acutely mucronate; heads solitary, terminal, sessile or subsessile, 5–7 lin. long, 1/2– 3/4 in. in diam., many-flowered; outer bracts 3–4 lin. long, subulate, acute, long-ciliate; floral bracts 2 3/4–4 1/2 lin. long, acutely long-acuminate from an ovate base, sometimes pustulate, glabrous or slightly pilose, very long-ciliate; perianth-tube 1 lin. long, glabrous; segments 2 3/4–3 3/4 lin. long, spathulate-linear, villous with spreading hairs; limb 3/4 lin. long, elliptic or oblong-elliptic, subacute, villous; anthers 2/3 lin. long; hypogynous scales 1/4– 2/3 lin. long, filiform; ovary 1/4– 1/2 lin. long, ellipsoid, villous; style 3–3 1/2 lin. long, cylindric, glabrous, not swollen at the base; stigma 1/2– 2/3 lin. long, clavate-cylindric, obtuse, furrowed. null