milk thistle flowers. botanical vintage realistic drawing of wild cirsium. inflorescence of field floral plant. meadow

thistle flower plant botanical vintage herb cirsium thorn blooming blossom botany branch bud celtic colored detailed drawing drawn field flora floral graphic handdrawn herbal illustration inflorescence isolated leaf leaves meadow medical medicinal pretty prickle realism realistic retro scottish silymarin spring stem style summer vector white wild wildflower