Botanical Survey of India | Flora of India

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Brassica napus L., Sp. Pl. 666. 1753. B. campestris L. subsp. napus (L.) Hook. f. & T. Anderson in Hook. f., Fl. Brit. India 1: 156. 1872.


Herbs, annual or biennial, erect, 50 - 150 cm high; taproot fusiform, tuberous, slender or stout. Leaves glaucous; basal leaves petiolate, lyrato-pinnatipartite or not, 5 - 22 x 1 - 70 cm, glabrous or sparingly pubescent; upper leaves sessile, shallowly cordate at base, clasping the stem, entire or dentate. Racemes 5 - 50 cm long; pedicels 1 - 2 cm long, up to 3 cm in fruit. Sepals erecto-patent, 6 - 8 mm long. Petals clawed, 10 - 20 mm long deep or light yellow. Basal stamens shorter and erecto-patent. Fruits 4 - 11 cm long, 3 - 4 mm thick, suberect, attenuate to a long slender up to 3 cm long beak. Seeds obscurely dentate.



KEY TO THE SUBSPECIES


1a. Roots and stem base tuberous 2.1. napobrassica
b. Roots and stem base slender 2.2. napus


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