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

Castilleja thompsonii Pennell
Thompson's paintbrush (Thompson's paintbrush)
Orobanchaceae (Broom-rape family)
(Previously in Scrophulariaceae)

Introduction to Vascular Plants

© Val George  Email the photographer   (Photo ID #26425)

E-Flora BC Static Map
Distribution of Castilleja thompsonii
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Species Information

Click on the image below to view an expanded illustration for this species.



General:
Perennial herb from a somewhat woody stem-base; stems several, clustered, ascending to erect, 10-40 cm tall, frequently branched above, bristly-hairy or long-soft-hairy, sometimes purplish.
Leaves:
Alternate, bristly-hairy or long-soft-hairy, sometimes also glandular, the lower leaves linear and entire, the upper ones with 1 to 2 pairs of linear spreading lobes.
Flowers:
Inflorescence a prominently bracted terminal spike, the bracts yellowish, wider than the leaves, deeply 3- to 5-lobed, minutely hairy and also fringed with long hairs; corollas 15-30 mm long, 2-lipped, the upper lip beak-like, included in the calyx or slightly exserted, much shorter than the tube and about 1.5 times the length of the prominent, 3-lobed lower lip; calyces often purplish, hairy, 12-25 mm long, deeply 2-lobed, these primary lobes again divided into 2 triangular or linear segments 1-3 mm long; stamens 4.
Fruits:
Capsules; seeds many, the seed-coats loose, net-veined.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry grasslands, sagebrush shrublands and rocky slopes in the steppe and montane zones; locally frequent in extreme SC BC; S to OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Castilleja thompsonii

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

Minimum

Average

Maximum

Elevation (metres) 355 790 2040
Slope Gradient (%) 0 27 80
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
2 150 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 3 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
152
Modal BEC Zone Class
BG
All BEC Zones (# of stations/zone) species was recorded in: BG(57), ESSF(4), IDF(44), MS(5), PP(39)

Climate

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

Castilleja villicaulis Pennell & Ownbey

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References