Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Rainier Pleated Gentian
Gentiana calycosa Griseb.
- Family: Gentian (Gentianaceae)
- Flowering: July-September
- Field Marks: The distinguishing features of this gentian are its perennial habit, its tube of the sepals 1/4-1/2 inch long, and its blue petals with tiny yellow dots over the surface.
- Habitat: Wet meadows, along streams, mostly in the mountains.
- Habit: Perennial herb with a thick rootstock.
- Stems: Upright, unbranched, up to 12 inches tall, smooth.
- Leaves: Opposite, simple, ovate to suborbicular, up to 2 inches long, pointed or rounded at the tip, rounded at the base, smooth, without teeth.
- Flowers: Showy, 1-3 in a cluster, subtended by lanceolate to ovate bracts.
- Sepals: 5, green, united below to form a tube, the tube 1/4-1/2 inch long, the lobes
1/8-1/3 inch long.
- Petals: 5, deep blue, united to form a bell-shaped tube, the tube to 1 1/2 inches long, the lobes 1/3-1/2 inch long, the surface covered with tiny yellow dots.
- Stamens: 5, attached to the tube of the petals.
- Pistils: Ovary superior, smooth; stigmas 2.
- Fruits: Capsules narrowly ellipsoid, 3/4-1 inch long, with a stalk at the base; seeds
numerous, narrowly winged, about 1/10 inch long.
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