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

Penstemon serrulatus Menzies ex Sm.
coast penstemon (serrulate penstemon)
Plantaginaceae (Mare's-tail family)
(Previously in Scrophulariaceae)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #30010)

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Distribution of Penstemon serrulatus
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Species Information

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General:
Perennial herb from a branching, woody stem-base; stems several to many, tufted, ascending to erect, 20-70 cm tall, somewhat woody at the base, smooth below, usually minutely hairy above especially in the inflorescence, but not glandular.
Leaves:
Opposite, unstalked or short-stalked on vigorous shoots, broadly lanceolate to elliptic or oblong-egg-shaped, 2-9 cm long, saw-toothed to jagged-toothed or sometimes nearly entire, often wavy-edged, essentially smooth; upper leaves sometimes clasping-based.
Flowers:
Inflorescence terminal, of 1 to 5 whorled clusters of stalked flowers, the lower whorls often open, the upper compact; corollas deep blue to purple, tubular, 1.5-2.5 cm long, smooth inside and out or sometimes hairy within at base of lower lip, 2-lipped, the upper lip 2-lobed, the lower lip 3-lobed, the lobes smooth; calyces 5-9 mm long, 5-lobed, the lobes fringed with hairs and sometimes irregularly cleft; fertile stamens 4, the anthers smooth except for a hairy fringe along the sutures; sterile stamen yellow-bearded on the upper half.
Fruits:
Capsules, 5-8 mm long, usually slightly exceeding the appressed calyx lobes; seeds numerous, 1-1.5 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Streambanks and moist gullies and rocky slopes in the lowland to lower subalpine zones; frequent in W BC south of 56degreeN, except absent from the Queen Charlotte Islands, rare E of Coast-Cascade Mountains; S to OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Penstemon serrulatus

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) 213 1011 2250
Slope Gradient (%) 0 40 93
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
80 169 246
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 1 5
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
25
Modal BEC Zone Class
ESSF
All BEC Zones (# of stations/zone) species was recorded in: AT(1), CWH(5), ESSF(5), ICH(5), IDF(2), MH(1), MS(1)

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.

Taxonomic and Nomenclatural Links

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General References