Sigesbeckia pubescens

Sigesbeckia pubescens is an erect annual herb of the Asteraceae growing 30-100 cm tall, with stout, branching, densely glandular-pubescent and hairy stems that feel sticky to the touch. The opposite, broadly ovate to triangular-ovate leaves have coarsely serrate margins, a truncate to broadly cuneate base often decurrent on the winged petiole, and softly hairy surfaces with conspicuous trichomes. Small, yellow heads with both ray and disc florets are arranged in lax terminal corymbiform panicles; the diagnostic feature is the involucre of five long, spreading, glandular outer bracts that produce viscid drops, helping the achenes (which are curved and lack a pappus) cling to passing animals for dispersal. It is widely distributed across temperate and subtropical East Asia, including China, Korea and Japan, in forest margins, riverbanks, fields and disturbed ground.