Tormentil

Tormentil (Potentilla erecta) grows widely in Great Britain, preferring light acid soil.

It grows up to 20 inches high, the upper leaves having three leaflets and two leafy stipules.

The flowering stems grow from a rosette of leaves that often wither before the flowers appear, which is between May and October.

The yellow flowers, which look a bit like those of buttercups, have four sepals and four petals. They produce a nectar that attracts insects, but the plant can also self-pollinate.

Each flower produces up to twenty fruits in a small solid receptacle.

Tormentil was used medicinally in past ages. In a book published in 1616 a powder made from tormentil roots was recommended as a cure for toothache.

The plant was also used as a source of red dye and its highly astringent roots could serve as alternative to oak bark in the tanning of hides.

© John Welford