bidens frondosa, devil's beggarticks, black jack plant or biden pilosa

annual asteraceae background banks beautiful bed beggarticks biden bidens black bloom blossom botanical botany brown buds bur close closeup color common devils environment flora flower foliage fresh frondosa garden green herb jack leaf leafy leaves macro marigold natural nature outdoor pilosa pitchfork plant plants river season stem sticktights summer texture uncultivated vegetation weed weeds wild yellow