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

Pedicularis oederi Vahl ex Hornem.
Oeder's lousewort
Orobanchaceae (Broom-rape family)
(Previously in Scrophulariaceae)

Introduction to Vascular Plants

© Val George  Email the photographer   (Photo ID #60600)

E-Flora BC Static Map
Distribution of Pedicularis oederi
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Species Information

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Perennial herb from thickened, spindle-shaped roots; stems usually single, erect, 5-25 cm tall, unbranched, nearly smooth to soft-hairy or long-woolly, especially in the inflorescence.
Basal leaves long-stalked, oblong to lanceolate, 3-10 cm long, pinnately lobed to deeply cleft, the lobes toothed; stem leaves alternate, few, stalked, reduced.
Inflorescence a dense, bracted, terminal spike of several to many flowers, the spike compact to elongated, the bracts hairy, similar to the leaves but merely toothed and reduced upward; corollas yellow sometimes with purplish markings, 15-25 mm long, 2-lipped, the upper lip 5-9 mm long, somewhat arched, hood-like, beakless and lacking teeth, often purplish at the tip, the lower lip 3-lobed; calyces 7-11 mm long, hairy, 5-toothed, the teeth triangular, 2-3 mm long, sometimes few-toothed near the tip; stamens 4, the filaments long-hairy.
Capsules, lance-oblong, 11-16 mm long; seeds several.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to moist meadows, tundra and rocky slopes in the alpine zone; infrquent in BC north of 54degreeN; circumboreal, N to AK, YT and NT; E to AB and S to WY; Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Pedicularis oederi

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) 1285 1729 2030
Slope Gradient (%) 0 13 20
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
28 73 200
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 4 7
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: BAFA(2), ESSF(1), SWB(3)


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.

Synonyms and Alternate Names

Pedicularis versicolor Wahlenb.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References