My best guess on your mystery plant is that this is from a magnolia tree. The pinecone object is the seed pod from the center of a magnolia blossom that at one time was surrounded by large petals. I am not positive about my guess however. The photo could be the seed pod from a tropical plant instead. Perhaps other readers of this will be more familiar with this unusual plant part. You want to try contacting the florist that made the arrangement. Professional florists import flowers from all over the world to create their arrangements. Thanks for this challenging question. Keep growing, Marianne Binetti