Persicaria bistorta (Bistort or Common Bistort) is a herbaceous flowering plant found throughout Europe. The generic placement of this species is in flux. While treated here as in Persicaria, it has also been placed in Polygonum or Bistorta.
The Latin name "bistorta" refers to the twisted appearance of the root. The plant was used to make a bitter pudding in Lent from a combination of the plant's leaves, oatmeal, egg and other herbs. It is the principal ingredient of dock pudding.
Numerous other vernacular names have been recorded for the species in historical texts, though none is used to any extent. Many of the following refer to the plant's use in making puddings: Adderwort, Dragonwort, Easter giant, Easter ledger, Easter ledges, Easter magiant, Easter man-giant, Gentle dock, Great bistort, Osterick, Oysterloit, Passion dock, Patience dock (this name is also used for Rumex patienta), Patient dock, Pink pokers, Pudding grass, Pudding dock, Red legs, Snakeweed, Twice-writhen, Water ledges.
DescriptionPlants bloom late spring into mid summer, producing tall stems ending in single terminal racemes that are club-like spikes of pink-rose colored flowers. The racemes are about 2cm thick and 5-9cm long and end 1 meter tall,upright growing stems. Plants grow in moist soils and under dry conditions go dormant, losing there foliage until adequate moister exists again. This species is grown as an ornamental garden plant, especially the form 'Superba' which has larger, more showy flowers. Typically alpine plants growing from short, thick rhizomes that branch. The foliage is normally basal with a few smaller leaves produced near the lower end of the flowering stems. The leaves are oblong-ovate or triangular-ovate in shape and narrow at the base. The petioles are broadly winged.
commons Polygonum bistorta
bistort in Bulgarian: Обикновено кървавиче
bistort in Czech: Rdesno hadí kořen
bistort in German: Schlangen-Knöterich
bistort in Spanish: Polygonum bistorta
bistort in Esperanto: Bistorto
bistort in French: Renouée bistorte
bistort in Georgian: დვალურა
bistort in Lithuanian: Paprastoji gyvatžolė
bistort in Dutch: Adderwortel
bistort in Japanese: イブキトラノオ
bistort in Polish: Rdest wężownik
bistort in Slovak: Hadovník väčší
bistort in Ukrainian: Гірчак зміїний