Steirodiscus speciosus (Pillans) B.Nord.

Annual herb, 80-300 mm, stem flexuous, corymbosely branched above. Leaves alternate, ascending, mostly 30-40 x 15-20 mm, pinnatisect or some leaves rarely obscurely bipinnatisect, with up to 7 lobes on each side, lobes alternate or subopposite and subsecund, flliform, 3-12 x 0.5 mm, entire or with 1 or 2 lobules, uppermost leaf sometimes simple and filiform. Capitula solitary, pedunculate; peduncles 20-40 mm long, with 1-3 minute, scale-like bracts. Involucre campanulate when fresh but drying urceolate with marked constriction above ovaries, 5-6 x 2-4 mm, bracts 11-15(-18), connate for two thirds their length, free parts lanceolate, with narrow membranous margins, penicillate. Ray florets ± as many as bracts and opposite them, 11-18, yellow or rarely pale orange; tube narrowly cylindrical, 2.0-3.5 nun long, with scattered abaxial trichomes at top of tube; blade 7-10 x 3-4 mm, spreading, recurved apically; ovary terete, 2.5 mm long, glabrous, longitudinally colliculate, style branches partly or fully exserted, ±1 mm long. Disc florets bisexual, yellow, 4-5 mm long; tube narrowly funnel-shaped, 3-4 mm long, sparsely pubescent in distal half; lobes ±1 mm long, ovate, acute; ovary terete, 2.5 mm long, glabrous, longitudinally colliculate, style branches ±1 mm long. Cypselas obovoid-prismatic, ±2.5 mm long, glabrous, longitudinally colliculate.