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Gentianopsis thermalis
Several clumped stems with few leaves at base, 2-4 pairs of leaves on stem, and few bell-shaped, deep blue or blue-violet flowers at stem ends or in upper leaf axils on leafless stalks. Habit: native annual herb. Height: 4-16 in (10-40 cm). Leaf: in basal tuft, spatulate, to 2 in (5 cm) long; on stem, opposite, 2-4 pairs, narrowly oblong to lanceolate, clasping. Flower: trumpet, deep blue to deep violet with darker streaks, 1-2 in (2.5-5 cm) tall; 4 wide, overlapping, irregularly toothed petals; terminal or from leaf axil; folding at night, opening in daylight Fruit: small capsule.
Moist sites: meadows, bogs, wetlands; subalpine. Across Canada, and south throughout most of the western mountains to eastern Nevada, Utah, and northern New Mexico.
Also called Rocky Mountain fringed gentian, this is the official flower of Yellowstone National Park. Found in Yellowstone National Park!
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