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

Turritis glabra L.
tower mustard
Brassicaceae (Mustard family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #9436)

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Distribution of Turritis glabra
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Species Information

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Biennial or short-lived perennial herb from a simple stem-base; stems simple or branched above, 0.3-1.2 m tall, densely stiff-hairy at base, usually glabrous above.
Basal leaves oblanceolate, 3-14 cm long; stem leaves strongly overlapping, narrowly egg-shaped to lanceolate, 5-15 cm long, to 4 cm wide, unstalked and ear-like at the bases.
Many-flowered racemes; petals 5-6 mm long, cream sepals about 3 mm long, glabrous, not bulging at one side on the base.
siliques, erect, appressed to axis of the inflorescence, straight, glabrous, 6-10 cm long, 1-1.5 mm wide; seeds 1-1.5 mm wide, with very narrow wings.
This taxon occurs in many native habitats but also readily colonizes roadsides and waste places. Its native status is therefore uncertain (Rollins 1993).

Source: The Illustrated Flora of British Columbia

Habitat / Range

Moist to dry streambanks, meadows, open forests, rock outcrops, roadsides and waste places in the lowland and montane zones; common throughout BC; E to PQ and S to GA and N CA; native status uncertain, also occurs in Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Turritis glabra

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) 38 929 2075
Slope Gradient (%) 0 36 84
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
23 190 358
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 2 5
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: AT(2), CDF(7), CWH(1), ESSF(1), ICH(7), IDF(1), MS(4), PP(1), SBPS(2), SBS(2)


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

Arabis glabra (L.) Bernh.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References