broad-leaved dock (rumex obtusifolius subsp. obtusifolius). basal leaf closeup

polygonaceae rumex obtusifolius abaxial basal leaf bitter dock bluntleaf broadleaved butter cordate base entire margin glabrous lamina blade vein oblong obtuse apex ovate petiolate petiole proximal undulate venation subsp broad-leaved subsp obtusifolius closeup virtual herbarium belarus flora: focus-stacked closeups wild cultivated plants including flowers leaves fruits intended illustrations botanical manuals