Chain Fern, Rooting chainfern

Woodwardia radicans

Physical Characteristics

Woodwardia radicans is an evergreen Fern growing to 1.8 m (6ft) by 0.6 m (2ft in). See above for USDA hardiness. It is hardy to UK zone 9. It is in leaf all year. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid and neutral soils. It can grow in semi-shade (light woodland). It prefers moist or wet soil.

Distribution

South-western Europe and the Atlantic Islands.

Habitats

Woodland Garden Dappled Shade; Shady Edge; Ground Cover; Bog Garden;

Edible Uses

None known

Medicinal Uses

Anodyne Anthelmintic Astringent Anthelmintic, astringent[178]. A decoction of the roots has been used both internally and externally in the treatment of pain from injuries[257].

Known Hazards

Although we have found no reports of toxicity for this species, a number of ferns contain carcinogens so some caution is advisable[200]. Many ferns also contain thiaminase, an enzyme that robs the body of its vitamin B complex. In small quantities this enzyme will do no harm to people eating an adequate diet that is rich in vitamin B, though large quantities can cause severe health problems. The enzyme is destroyed by heat or thorough drying, so cooking the plant will remove the thiaminase[172].