Orthocarpus tenuifolius (Pursh) Benth.
thin-leaved owl-clover (thinleaved owl's-clover)
Orobanchaceae (Broom-rape family)
(Previously in Scrophulariaceae)

Introduction to Vascular Plants

Photograph

© Bryan Kelly-McArthur     (Photo ID #83740)


Map

E-Flora BC Static Map

Distribution of Orthocarpus tenuifolius
Click here to view the full interactive map and legend

Species Information

General:
Annual herb; stems erect, 10-30 cm tall, simple or branched above; short-hairy.
Leaves:
Alternate, unstalked, 1-5 cm long, the lowermost linear and entire, the others with 1 or 2 pairs of slender lobes, short-hairy.
Flowers:
Inflorescence a dense, prominently bracted, terminal spike, the bracts differing abruptly from the leaves, shorter, broader, blunt-tipped, net-veined, at least the upper showy and petal-like with pink-purple tips, the lower with a pair of slender lateral lobes and commonly bristle-fringed below the middle; corollas yellow, sometimes purplish-tipped, hairy, 14-20 mm long, largely hidden by the bracts, tubular, 2-lipped, the upper lip beak-like and hooked, surpassing the lower lip by about 1 mm, the lower lip broader, moderately pouched, tipped with 3 tiny teeth; calyces tubular, hairy but non-glandular, 2-cleft, each segment 2-lobed, the lobes shorter than the tube; stamens 4.
Fruits:
Capsules, ellipsoid; seeds several, with netted coats.

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.

USDA Species Characteristics

Flower Colour:
Purple
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Ecology

Ecological Framework for Orthocarpus tenuifolius

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)
977 810 1484
Slope Gradient (%)
22 0 45

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

173 127 300
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 1 4
Modal Nutrient Regime
Class
D
# of field plots
 species was recorded in:
11
Modal BEC Zone Class
PP

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

IDF(2), MS(1), PP(4)

Habitat and Range

Moist to dry, open sites in the steppe and montane zones; infrequent in extreme SC and SE BC; S to MT, ID and OR.

SourceThe Illustrated Flora of British Columbia