This oral supplement contains an extract of Polypodium leucotomos, a tropical fern that's rich in antioxidant compounds that protect the skin from free radical damage.

Myxozoans, the team reports, are most closely related to Polypodium and share a common ancestor with jellyfish.

Roper pointed out a less flashy fern — a variety of the Polypodium vulgare named Uulong Island — that has established itself nicely.