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

Penstemon fruticosus var. scouleri (Pursh) Greene (Lindl.) Cronquist
shrubby penstemon (littleleaf bush penstemon)
Plantaginaceae (Mare's-tail family)
(Previously in Scrophulariaceae)

Introduction to Vascular Plants

© Werner Eigelsreiter  Email the photographer   (Photo ID #7124)

E-Flora BC Static Map
Distribution of Penstemon fruticosus var. scouleri
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Species Information

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General:
Low shrubs or sub-shrubs, 15-40 cm tall; stems much-branched, ascending to erect, often reddish and brittle, smooth to minutely hairy on new growth and glandular-hairy in the inflorescence.
Leaves:
Mostly opposite, more or less evergreen, smooth, primary leaves tending to be concentrated toward the base and on short sterile shoots, short-stalked, the blades linear to broadly lanceolate, toothed or entire, 1-6 cm long; leaves of the flowering shoots reduced and less crowded.
Flowers:
Inflorescence a short, bracted, terminal raceme of a few pairs of stalked flowers, the stalks hairy; corollas blue-lavender to light purple, tubular, 2.5-5 cm long, distinctly 2-lipped, smooth on the outside, long-white-hairy within on the lower lip near its base and on a pair of ridges; calyces 7-15 mm long, hairy, 5-lobed, the lobes lance-linear to narrowly egg-shaped; fertile stamens 4, the anthers densely white-woolly; sterile stamen shorter than the fertile stamens, long-yellow-bearded toward the tip.
Fruits:
Capsules, 8-12 mm long; seeds numerous, angled, narrowly winged, 1-2 mm long.
Notes:
Two sympatric varieties occur in BC.

1. Leaves entire or slightly fine-toothed, relatively broad, 2-7 times as long as wide; corollas 2.5-4 cm long....................var. fruticosus

1. Leaves more or less toothed or sometimes entire, relatively narrow, 6-10 times as long as wide; corollas 3.5-5 cm long....................var. scouleri (Lindl.) Cronq.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry rocky hillsides and open forests in the steppe to alpine zones; common in S BC in and east of the Coast-Cascade Mountains and south of 53degreeN; S to MT, WY and OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Penstemon fruticosus var. scouleri

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) 1150 1195 1260
Slope Gradient (%) 45 52 65
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
218 239 270
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 1 2
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
3
Modal BEC Zone Class
ICH
All BEC Zones (# of stations/zone) species was recorded in: ICH(3)

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

Penstemon fruticosus subsp. scouleri (Lindl.) Pennell & Keck
Penstemon fruticosus var. albus ined.
Penstemon scouleri Lindl.

Taxonomic and Nomenclatural Links

Additional Photo Sources

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General References