Erect to spreading, rarely decumbent, shrub (0.6-) 1-3 m high. Leaves 1-5 cm long, to 35 mm wide across lobes, usually apically 3 (-5)-fid to deeply 3 (-7)-partite, occasionally with some (rarely most or all) leaves entire and elliptic or narrowly so and 1-4 cm long by 2-5 (-9) mm wide; lobes ascending, sometimes divaricate, often rigid, broadly triangular to sublinear, 2-22 mm long, 1.5-3 mm wide, pungent; margins shortly refracted; lower surface sometimes enclosed, subsericeous to subvillous. Conflorescences terminal and in upper axils, often clustered, ±sessile, erect; unit conflorescence a loose 2-6-flowered cluster, basipetal; rachis 0.2-4 mm long, subsericeous or glandular-pubescent. Flowers basiscopic. Perianth with appressed biramous and simple-erect glandular hairs outside, pilose inside. Pistil 46-52 mm long, glabrous; ovary with a conspicuous rounded outgrowth on each flank. Follicles 12-18 mm long, glabrous, with a conspicuous transverse ventral ridge on each flank perpendicular to and across the ventral suture, colliculose elsewhere.
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