Gentiana douglasiana Bong.
swamp gentian
Gentianaceae (Gentian family)

Introduction to Vascular Plants

Photograph

© Jeremy Gatten     (Photo ID #9142)


Map

E-Flora BC Static Map

Distribution of Gentiana douglasiana
Click here to view the full interactive map and legend

Species Information

General:
Annual herb from a taproot; stems erect, several, freely branching, angled, 5-20 cm tall.
Leaves:
Basal leaves few, egg-shaped to elliptic, 5-15 mm long, forming a rosette; stem leaves similar, 5-10 mm long, fused at the base and slightly decurrent.
Flowers:
Inflorescence of solitary flowers or more usually a loose cluster of terminal axillary stalked flowers; corollas white with purplish streaks and stipples, 10-13 mm long, tubular with 5 pointed lobes, the lobes blue on the back, plaits of the sinuses 2/3 the length of the lobes, calyces 4-6 mm long, 1/2 the length of the corollas, lobes 1/2 the length of the tubes; stamens shorter than the corolla tubes; anthers 1 mm long.
Fruits:
Capsules, oblong, wing-margined; seeds dark brown, spindle-shaped, 1.5 mm long.

SourceThe Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Gentiana douglasiana

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

Avg

Min

Max

Elevation (metres)
307 5 1090
Slope Gradient (%)
15 0 90

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

354 0 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
5 0 8
Modal Nutrient Regime
Class
B
# of field plots
 species was recorded in:
198
Modal BEC Zone Class
CWH

All BEC Zones (# of stations/zone) species was recorded in

AT(1), CMA(6), CWH(156), MH(35)

Habitat and Range

Wet bogs and meadows from the lowland to alpine zones; common in coastal BC; N to SE AK and S to WA.

SourceThe Illustrated Flora of British Columbia