blue eryngo (eryngium planum). immature inflorescence closeup

inflorescence flower belarus flora black background closeup focus stacking macro nature plants botanical science botany virtual herbarium peduncle leaf capitulum petiole lamina anthesis blade head serrate apiaceae umbelliferae bract pedicel immature venation cauline sessile bracteole eryngium planum blue eryngo vein margin flat sea holly spinulose spinescent