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

Conringia orientalis (L.) Dumort.
hare's-ear mustard
Brassicaceae (Mustard family)

Introduction to Vascular Plants
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E-Flora BC Static Map
Distribution of Conringia orientalis
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Species Information

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Annual herb from a taproot; stems 30-70 cm tall, mostly simple, glabrous and glaucous.
Basal leaves 5-9 cm long, oblanceolate to egg-shaped, narrowed to base, more or less entire; stem leaves oblong-lanceolate, unstalked and heart-shaped, clasping at the bases.
Racemes few-flowered, flat-topped; flower stalks ascending, 10-15 mm long; petals cream to lemon, with a slender stalklike base and a narrowly egg-shaped blade, 7-12 mm long; sepals sharp-pointed, erect, 6-8 mm long.
Siliques, 8-13 cm long, 1.5-2 mm thick, slightly constricted between the seeds, tapered to a slender tip; thick styles about 1 mm long.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry roadsides, fields and waste places in the steppe and montane zones; rare in SW and SC BC; introduced from Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Conringia orientalis

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




Elevation (metres)
Slope Gradient (%)
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in:


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 cool temperate & cool mesothermal.

Synonyms and Alternate Names

Brassica orientalis L.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References