Dried rhizome and roots of Calypso bulbosa (L.) Oakes (Cypripedium bulbosum L.), Cypripedium pubescens Willd., or of Cypripedium parviflorum Salisb., Orchidaceae. Habit. Nova Scotia south to Alabama, west to Nebraska and Missouri. Constit. Volatile oil, volatile acid, tannin, resins.
Sedative.
Sedative/Hypnotic