I believe those are cut flowers from the Sea Holly plant (eryngium). It's a perennial that's easily grown in full sun and the flowers are unusual. The flowers last in the garden for weeks and these are probably either dried and preserved or possibly fresh cut. The arrangement is stunning and is beautiful in the room. I'll be adding this to my ideabook as well. Love everything in the space! I hope this helps.
what i like- the white walls and darker furniture, the glass table, and the table decorations.
what i dislike- the rug underneath the table.
time period- art deco- has a modern look, zebra looking rug, the vivid colors.