Bistorta officinalis

Growing form

Perennial herb.

Size

50–80 cm high.

Stem

The stem is erect and simple.

Leaf

The lowest leaves are long-petiolate. The petiole is alate. The lamina is 5–20 cm long, ovate, rounded or cordate at the base, and obtuse. The upper leaves are sessile, amplexicaul, and the lamina is narrowly deltoid and acute.

Flower

The inflorescence is a 2–7 cm long, dense, stout, erect spike. The perianth is 3–5 mm wide and pink.

Fruit and seed

The fruit is a black-brown, 3.5-4.5 mm long, lustrous achene that quite seldom develops.

Source: Pinkka e-learning: Botanical excursion to Lammi - Lammi biological station, dendropark. CC BY 4.0

The map represents observations of this taxon, but it may not be used as a distribution map.

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Observations
  • Total squares
Checklist
MR.1
Scientific name
Bistorta officinalis
Author
Delarbre
Vernacular names
  • isokonnantatar (Finnish)
  • stor ormrot (Swedish)
Colloquial name
  • konnantatar (Finnish)
Identifier
http://tun.fi/MX.38231
Taxon rank
art
Occurrence in Finland
Samlingsprov från Finland
Status in Finland
  • 2 - spreading in the wild; to a notable degree of cultivated origin
  • AOV - spontaneous, old, resident
Finnish Regional Red List Category
  • 2019 NA – Ej tillämplig
  • 2010 NA – Ej tillämplig
  • 2000 NE – Ej bedömd
Expert
  • Pertti Uotila
DNA barcode sequences
Bistorta officinalis
17 public records
Polygonum bistorta
2 public records
Informal groups
  • Vascular plants