Woodwardia (chain fern) is a genus of 14-20 species of ferns in the family Blechnaceae, native to warm temperate and subtropical regions of the Northern Hemisphere. They are large ferns, with fronds growing to 50-300 cm long depending on the species.

References

• Germplasm Resources Information Network: Woodwardia
• Flora of North America: Woodwardia
• Flora of China: Woodwardia species list
• Huxley, A., ed. (1992). New RHS Dictionary of Gardening. Macmillan.