Polemonium pulcherrimum Hook. var. pulcherrimum
showy Jacob's-ladder
Polemoniaceae (Phlox family)

Introduction to Vascular Plants

Photograph

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Map

E-Flora BC Static Map

Distribution of Polemonium pulcherrimum var. pulcherrimum
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Species Information

General:
Perennial herb from a branched stem-base atop a taproot; stems loosely erect to sprawling, clustered, spreading glandular-hairy especially in the inflorescence, sometimes nearly smooth elsewhere, foul-smelling if rubbed, 5-35 cm tall.
Leaves:
Basal leaves tufted and well-developed, pinnately compound with 11 to 25 egg-shaped to circular, opposite or offset leaflets, glandular-hairy when young; stem leaves few, reduced.
Flowers:
Inflorescences crowded, terminal head-like clusters of long-stalked flowers; corollas blue, rarely white, with yellow centres, bell-shaped, 7-13 mm long, the 5 rounded lobes equalling to nearly twice as long as the tube; calyces 4-7 mm long, the 5 lobes lance-oblong.
Fruits:
Capsules, 3-chambered.

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 Polemonium pulcherrimum var. pulcherrimum

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)
1680 1680 1680
Slope Gradient (%)
70 70 70

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

180 180 180
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 2
Modal Nutrient Regime
Class
B
# of field plots
 species was recorded in:
1
Modal BEC Zone Class
ESSF

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

ESSF(1)

Habitat and Range

Dry to mesic, rocky slopes and ridges, gravelly or sandy terraces, meadows, roadsides and open forests in the montane to alpine zones; common in BC in and east of the Coast-Cascade Mountains, also known from a single location in the Queen Charlotte Islands; N to AK, YT and NT, E to SW AB and S to CO and CA.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Polemonium pulcherrimum subsp. pulcherrimum Hook.