flax-leaf fleabane (erigeron bonariensis). infructescence closeup

argentine fleabane asteraceae belarus flora compositae conyza bonariensis erigeron achene asthma weed black background botanical science botany capitulum closeup cypsela flaxleaf focus stacking fruit hairy horseweed indumentum infructescence involucral bract involucre macro nature panicle paniculiform pappus peduncle phyllary plants racemiform virtual herbarium wavyleaf strigillose