Clintonia uniflora (Menzies ex Schult. & Schult. f.) Kunth
queen's cup (blue-bead clintonia; bride's bonnet)

Introduction to Vascular Plants


© Ed McMackin     (Photo ID #88777)


E-Flora BC Static Map

Distribution of Clintonia uniflora
Click here to view the full interactive map and legend

Species Information

Perennial herb from a slender rhizome; flowering stems 4-15 (20) cm tall, hairy.
Basal leaves 2 or 3, oblanceolate to oblong or elliptic, 10-25 cm long, 3-7 cm wide, sheathing at the base, shiny and slightly fleshy, variably long-soft-hairy beneath, the margins entire, hairy; stem leaves lacking, bracts 1 or 2.
Inflorescence of solitary or rarely 2, erect flowers atop a leafless, 1- to 2-bracted, hairy stalk; flowers white, hairy, bell-shaped, about 2 cm long, of 6 similar, distinct tepals; stamens 6, the filaments loosely woolly-hairy; pistil 1, 2- or 3-chambered.
Berries, globe- to egg-shaped, metallic blue, 6-12 mm long; seeds 10 to 15, black.

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 Clintonia uniflora

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)
1011 0 2500
Slope Gradient (%)
23 0 410

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

209 0 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 0 8
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

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

BAFA(1), BWBS(5), CWH(1047), ESSF(1839), ICH(4034), IDF(242), MH(120), MS(421), SBPS(37), SBS(1604), SWB(1)

Habitat and Range

Moist to mesic forests and glades from the lowland to lower subalpine zones; common in BC south of 56degreeN; N to S AK, E to SW AB and S to MT, ID and CA.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Smilacina borealis var. uniflora Menzies ex Schult. & Schult. f.