About 90 cm high, with villous branchlets. Leaves on the upper parts 4-5 mm long, on the lower parts mostly 0.6-1 cm long, sessile, lanceolate, acute, ascending, incurved, broad and thickened at the base, bluntly keeled on the dorsal surface, convex on the ventral surface, ciliate throughout, becoming glabrous. Flower-heads about 1 cm wide, broadly obconic, involucred, crowded in corymbiform clusters: involucral leaves about twice the length of others, otherwise resembling them Bract shortly overtopping the petals or almost so, leaf-like, lanceolate, attenuate towards the base, concave on the ventral surface, ciliate. Bracteoles 5 mm long, oblanceolate, attenuate towards the base, appressed-villous on both surfaces of the upper half. Calyx-lobes about 2.75 mm long, linear, acute, membranous, villous on the upper parts of both surfaces. Petals scarcely 5 mm long, slightly widened above the middle, obtuse, membranous, with folded keels on the lower half, with a ridge from the keels to the apex. Anthers about 1.25 mm long, oblong. Ovary 2/3 inferior, villous on the upper part.
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Like B. paleacea but plants glabrescent, no coppicing, flowers in larger, top-shaped heads, white, involucral bracts shorter than flowers.