Steirodiscus gamolepis Bolus ex Schltr.

Annual herb, 60-130 mm, stem flexuous, simple or sparsely corymbosely branched above. Leaves alternate, ascending, mostly 10-20 x 5-10 mm, trisect or pinnatisect, with 1-3 lobes on each side, lobes alternate or opposite and subsecund, filiform, 1-5 x 0.5 mm, upper-most leaves simple and filiform. Capitula solitary, conspicuously pedunculate; peduncles 30-60 mm long, with 1 or 2 minute, scale-like bracts. Involucre narrowly campanulate or obconic, 3.5-4.5 x 1.5-3.0 mm, bracts 10-14, connate for two thirds their length, free parts lanceolate, with narrow membranous margins, penicillate. Ray florets ± half as many as bracts, 4-8, yellow; tube narrowly cylindrical, 2 mm long, with scattered abaxial trichomes at top of tube extending onto base of blade; blade 6-8 x 2-3 mm, spreading, recurved apically; ovary terete, 2 mm long, antrorsely pubescent in basal two thirds, style branches exserted, ±0.75 mm long. Disc florets bisexual, yellow, 3 mm long; tube funnel-shaped, 2 mm long, glabrous; lobes ±1 mm long, ovate, acute; ovary terete, 2 mm long, antrorsely pubescent in basal two thirds, style branches 0.5 mm long. Cypselas flask-shaped (ray) or terete (disc), ±2 mm long, antrorsely pubescent in basal two thirds.