Northern Prairie Wildlife Research Center
White Turtlehead (Chelone glabra)
- Family: Figwort (Scrophulariaceae)
- Flowering: July-October.
- Field Marks: The large, white, nearly closed corolla and the narrow, opposite, toothed leaves distinguish this species.
- Habitat: Along streams, wet meadows, swamps, fens, marshes.
- Habit: Perennial herbs from thickened rootstocks.
- Stems: Erect, branched or unbranched, smooth, up to 4 1/2 feet tall.
- Leaves: Opposite, simple, linear to lanceolate, pointed at the tip, tapering to the base, toothed, smooth, up to 6 inches long, up to 2 inches wide.
- Flowers: Crowded into terminal spikes up to 4 inches long, each flower white, up to 1 1/2 inches long.
- Sepals: 5, green, free from each other.
- Petals: 5, white, united to form a nearly closed, bilaterally symmetrical corolla, up to 1 1/2 inches long.
- Stamens: 4.
- Pistils: Ovary superior.
- Fruits: Capsule nearly spherical, up to 2/3 inch in diameter, with many seeds.
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