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

Drosera rotundifolia L.
Round-leaved Sundew (Carolina Draba; roundleaf sundew)
Droseraceae (Sundew family)

Introduction to Vascular Plants

© Paul Dawson  Email the photographer   (Photo ID #89169)

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Distribution of Drosera rotundifolia
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Drosera rotundifolia var. rotundifolia

Species Information

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Insect-eating perennial herb; stems erect, 5-25 cm tall.
Basal leaves erect or ascending, the blades rounded, 6-12 mm long and about as wide, the stalks 2-9 cm long, hairy, the long, reddish blade-hairs on upper surface stalked with gland-tipped, sticky, insect-trapping fluid; stem leaves lacking.
Inflorescence of raceme-like terminal cymes of 1-8 flowers, opening in full sun in a coiled cluster on one side of the stem; petals white, 6-10 mm long; calyces 4-6 mm long, fused to at least 1/3 their length.
Capsules, many seeded; seeds 1-1.5 mm long, spindle-shaped, light brown.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Swamps, bogs, fens, wet meadows and lakeshores in the lowland, steppe and montane zones; common along the coast, less frequent elsewhere in BC; circumpolar, N to AK, YT and NT, E to NF and S to MN, AL, FL, NV and CA; Greenland, Iceland, Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Drosera rotundifolia

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) 5 387 1480
Slope Gradient (%) 0 5 80
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
2 21 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 6 8
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: BWBS(30), CDF(9), CWH(323), ESSF(6), ICH(72), IDF(2), MH(23), SBS(49)

Ecological Indicator Information

A very shade-intolerant, submontane to subalpine, circumpolar forb (transcontinental in North America). Occurs on wet to very wet. nitrogen-poor soils (Mor humus forms) within boreal, cool temperate, and cool mesothermal climates. Sporadic in non-forested. semi-terrestrial communities on water-collecting sites amidst Sphagnum species in peat bogs. An oxylophytic species characteristic of nutrient­poor wetlands.

SourceIndicator Plants of Coastal British Columbia (Information applies to coastal locations only)


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.

Taxonomic and Nomenclatural Links

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General References