Hyalosperma semisterile

Erect glabrous or sparsely cottony herb to 15 cm high, simple or branched at basal and upper nodes. Leaves semi-terete, 5–15 mm long, obtuse to acute, the upper ones with hyaline appendages. Capitula broadly hemispherical at anthesis, 8–13(–15) mm diam. when fully expanded; involucral bracts multiseriate, outer bracts obtuse or rounded, colourless to pale brown, inner bracts with bright yellow laminae 2–5 mm long; receptacle flat to convex; florets numerous, bisexual except for few central functionally male ones, corolla 5-lobed. Cypselas compressed-ovoid, c. 1.5 mm long, strongly papillose; pappus bristles c. 12, plumose for most of their length, not or barely dilated in the lower half, united at base. Flowers Aug.–Oct.