saw-wort (serratula tinctoria). immature synflorescence closeup

asteraceae compositae serratula tinctoria anthesis capitulum corymbose disc floret flower head imbricate immature inflorescence involucral bract involucre leaf paniculate phyllary pinnatifid subtending synflorescence tubular sawwort dyer 039 plumeless saw-wort tinctoria closeup virtual herbarium belarus flora: focus-stacked closeups wild cultivated plants including flowers leaves fruits intended illustrations botanical manuals