E-Flora BC: Electronic Atlas of the Flora of British Columbia

Gentiana calycosa Griseb.
mountain bog gentian (Rainier pleated gentian)
Gentianaceae (Gentian family)

Introduction to Vascular Plants

© Virginia Skilton  Email the photographer   (Photo ID #10681)

E-Flora BC Static Map
Distribution of Gentiana calycosa
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Species Information

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Perennial herb from a thick, fleshy root; stems erect to decumbent, 1 or more usually several, simple, usually tufted, glabrous, 10-35 cm tall.
Stem leaves opposite, egg-shaped to broadly elliptic, 7-9 pairs, 1-3 cm long, 9-14 mm wide.
Inflorescence a solitary (sometimes 3), terminal, usually unstalked flower set in the upper pair of leaves; corollas blue or bluish, 2-4 cm long, narrowly funnel-shaped, the lobes egg-shaped, spreading, the plaits between the lobes cleft and unevenly-toothed; calyx tubes 3-9 mm long with 5 flaring, unequal lobes 4-6 mm long; stamens shorter than the corolla tubes; anthers 2.5-4 mm long.
Capsules, 1-chambered; seeds elliptic, flattened, without winged margins, finely veined.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Mid Spring
Fruit/Seed characteristics:
Colour: Black
Present from Summer to Fall
Source:  The USDA

Habitat / Range

Wet to moist meadows and streambanks in the subalpine and alpine zones; rare in SE BC; E to SW AB and S to ID, MT and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Gentiana calycosa

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 1915 2191 2562
Slope Gradient (%) 0 40 100
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 32 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 3 6
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: AT(29), ESSF(1)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Gentiana calycosa var. asepala (Maguire) C.L. Hitchc.
Gentiana calycosa var. obtusiloba (Rydb.) C.L. Hitchc.
Gentiana calycosa var. xantha A. Nels.
Pneumonanthe calycosa (Griseb.) Greene
Pneumonanthe parryi (Engelm.) Greene

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References