Mitella trifida Graham
three-toothed mitrewort (threeparted miterwort)
Saxifragaceae (Saxifrage family)

Introduction to Vascular Plants


© Ian Cumming     (Photo ID #4917)


E-Flora BC Static Map

Distribution of Mitella trifida
Click here to view the full interactive map and legend

Species Information

Perennial herb from slender rhizomes; stems erect, clustered, 15-35 cm tall, fine glandular-hairy to hairy.
Basal leaves nearly round, with heart-shaped bases, 2-6 cm wide, slightly shorter, indistinctly 5- to 7-lobed, round-toothed, long-stalked; stem leaves absent or of 1 or 2 membranous bracts.
Inflorescence a closely-flowered spike-like cluster of 10 to 20 flowers, blossoming upward, the flower stalks stout, 0.5-2 mm long; petals white to purplish-tinged, clawed, the blades 3-lobed, the lobes elliptic; calyces broadly bell-shaped, 1.5-3 mm long, joined to ovary for part of length; free hypanthium thinly gland-lined, somewhat spreading; calyx lobes 5, oblong to egg-shaped, erect to spreading, thin, whitish or purplish-tinged; stamens 5, opposite the calyx lobes.
Capsules; seeds black, veiny-pitted.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Mitella trifida

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)
1275 290 2200
Slope Gradient (%)
26 0 78

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

104 19 335
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 2 7
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

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

CWH(1), ESSF(9), ICH(11), IDF(12), MH(1), MS(7), SBS(1)

Habitat and Range

Moist woodlands, forests and open slopes in the montane zone; locally frequent on S Vancouver Island and S BC, disjunct and infrequent in WC BC; N to AK, E to AB and S to MT, ID and CA.

SourceThe Illustrated Flora of British Columbia