broad-leaved dock (rumex obtusifolius subsp. obtusifolius). flowering whorl closeup

polygonaceae rumex obtusifolius anthesis articulated bitter dock bluntleaf broadleaved butter deltoid dentate leaf filiform flower inflorescence lingulate pedicel peduncle perianth segment pistil stem stigma style tepal triangular tubercle valve whorl subsp broad-leaved subsp obtusifolius flowering closeup virtual herbarium belarus flora: focus-stacked closeups wild cultivated plants including flowers leaves fruits intended illustrations botanical manuals