Brassica napus L.
turnip (rape; winter rape)
Brassicaceae (Mustard family)

Introduction to Vascular Plants


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E-Flora BC Static Map

Distribution of Brassica napus
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Species Information

Annual or biennial herb from a taproot; stems up to 1.5 m tall, leafy.
Glaucous, glabrous or sparsely hairy; basal leaves pinnately lobed, often clasping at the bases; stem leaves somewhat pinnately lobed, stalked.
In elongate racemes; flower stalks slender, spreading to ascending; petals golden to dull yellow, 10-14 mm long.
Siliques, ascending, 5-10 cm long; styles beaked, 7-11 mm long; seeds about 1.8 mm long, finely honeycombed. Brassicaceae

SourceThe Illustrated Flora of British Columbia


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USDA Species Characteristics

Flower Colour:
Blooming Period:
Early Spring
Fruit/Seed characteristics:
Colour: Black
Present over the Summer
Source:  The USDA

Habitat and Range

Mesic to dry fields and waste places in the lowland, steppe and montane zones; rare in BC south of 55degreeN; introduced from Eurasia.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Brassica napobrassica (L.) P. Mill.
Brassica napus var. napobrassica (L.) Reichenb.