Caltha leptosepala var. leptosepala
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants

Photograph

© Bryan Kelly-McArthur     (Photo ID #79018)


Map

E-Flora BC Static Map

Distribution of Caltha leptosepala var. leptosepala
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from a short, thick stem-base with fibrous roots; stems erect, 5-40 cm tall; plants smooth, fleshy.
Leaves:
Basal leaves waxy green, the blades oblong egg-shaped to circular or kidney-shaped, 2-12 cm long, margins wavy coarse-toothed, round-toothed, or nearly entire; long-stalked (2-25 cm).
Flowers:
Inflorescence a 1- or 2- (4-) flowered, terminal cyme, the flowers 2-4 cm wide; flower stalks erect, usually leafless or with 1 leaf; petals absent; sepals 6 to 12, white or greenish, tinged bluish on outside, oblong, 8.5-23 mm long; stamens 50 or more.
Fruits:
Follicles, 4 to 15, spreading, linear-oblong, 10-20 mm long, 3-4.5 mm wide; beaks straight or curved, 0.5-1.8 mm long; seeds brown, elliptic, 1.9-2.5 mm long, surface longitudinally wrinkled or grooved.
Notes:
Two varieties occur in BC:

1. Leaves longer than wide, the margins more sharp-toothed than round-toothed; flowers usually 1 per stem; subalpine and alpine......................... var. leptosepala

1. Leaves nearly as wide as long, the margins subentire to broadly round-toothed; flowers mostly 2 per stem; lowland to subalpine........................... var. biflora (DC.) Lawson

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 Caltha leptosepala var. leptosepala

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)
1510 1080 1890
Slope Gradient (%)
14 0 70

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

174 120 228
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
5 4 7
Modal Nutrient Regime
Class
C
# of field plots
 species was recorded in:
10
Modal BEC Zone Class
ESSF

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

BAFA(4), ESSF(5), MH(1)

Habitat and Range

Wet to moist meadows, bogs, fens, streambanks and seepage sites from the lowland to alpine zones; common in W BC, west of the Coast-Cascade Mountains (var. biflora), frequent throughout BC except Queen Charlotte Islands and adjacent coast (var. leptosepala); N to SW AK and S YK, E to AB and S to NM, AZ and CA.

SourceThe Illustrated Flora of British Columbia