Northern Prairie Wildlife Research Center
False Dragon-head (Physostegia virginiana)
- Family: Mint (Lamiaceae)
- Flowering: May-September.
- Field Marks: Species of Physostegia have clusters of large, pink flowers. Physostegia virginiana differs from others in the genus by its sharply toothed leaves, which are at least 1/2 inch broad.
- Habitat: Along streams, wet prairies.
- Habit: Perennial herb with long, slender rhizomes.
- Stems: Erect, usually unbranched, smooth, up to 3 feet long.
- Leaves: Opposite, simple, narrowly elliptic to lanceolate, pointed at the tip, tapering to the base, sharply toothed, smooth, up to 6 inches long, up to 2 inches broad.
- Flowers: Numerous in terminal racemes; each flower bright pink, up to 1 1/2 inches long, subtended by a bract.
- Sepals: 5, green, united below.
- Petals: 5, bright pink, united below, 2-lipped, up to 1 1/4 inches long.
- Stamens: 4.
- Pistils: Ovary superior, 4-parted.
- Fruits: Nutlets 4, smooth, obovoid, up to 1/6 inch long.
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