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

Thlaspi arvense L.
field pennycress
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Neil L. Jennings  Email the photographer   (Photo ID #9011)

E-Flora BC Static Map
Distribution of Thlaspi arvense
Click here to view the full interactive map and legend
Details about map content are available here
New! 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:
Annual herb from a taproot; stems 10-50 cm tall, simple to freely branched, glabrous.
Leaves:
Basal leaves few, shed early, oblanceolate, 2-6 cm long, 1-2 cm wide, sinuate to almost lyrate, narrowed to short stalks, glabrous; upper stem leaves unstalked, with earlike lobes at the bases, lanceolate to oblanceolate, toothed to wavy-margined and lobed, glabrous.
Flowers:
Flower stalks widely spreading to upcurved, 7-15 mm long, slender; petals white, 3-4 mm long; sepals 1.5-2.2 mm long, glabrous.
Fruits:
Silicles, oval to nearly heart-shaped, 10-17 mm long, 9-15 mm wide, strongly obcompressed, slightly notched, sinus 1.5-2.5 mm deep, wing-margined all around; beaks 0.1-0.2 mm long; seeds about 2 mm long, concentrically corrugated.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry fields and waste places in the lowland, steppe and montane zones; common throughout BC except rare on the Queen Charlotte Islands and adjacent mainland; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Thlaspi arvense

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) 495 859 1530
Slope Gradient (%) 0 5 18
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
72 224 308
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 3 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
10
Modal BEC Zone Class
IDF
All BEC Zones (# of stations/zone) species was recorded in: IDF(5), MS(1), PP(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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

Related Databases

General References