- Name also: Bog Adder’s-mouth, Bog Adder’s Mouth
- Family: Orchid family – Orchidaceae
- Growing form: Perennial herb. Almost rootless.
- Height: 3–15 cm. Stem thin, upper part angular, at base 2–3 bulb-like thickenings
- Flowering time: July–August.
- Endangerment: Near threatened. Protected in all of Finland, except the Åland Islands.
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