Brassica L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 335-336

88. Brassica L. 1

Herbs or small shrubs. Leaves entire to pinnatipartite. Sepals erect or patent, the inner larger than the outer. Petals yellow or white, clawed. Lateral nectaries prismatic, intense green. Ovary sometimes with a short gynophore. Fruit a siliqua with a long or short beak; valves convex, with a prominent median vein. Seeds in 1-2 rows in each loculus, globose or rarely ovoid. Literature: O. E. Schulz, Pflanzenreich 70 (IV. 105): 21-84

(1919). M. Onno, Österr. Bot. Zeitschr. 82: 309-34 (1933). 1 Cauline leaves very few or absent

2 Small shrub with long, thick, woody stock 2. balearica 2 Perennial herb, usually caespitose

3 Leaves all basal; seeds ovoid 21. repanda 3 A few cauline leaves present; seeds globose 20. gravinae 1 Stems ± leafy

4 Upper cauline leaves amplexicaul at the base

5 Siliqua 5-13 mm; beak filiform 18. souliei 5 Siliqua more than 15 mm; beak stout, conical

6 Siliqua 6-12 mm wide, with thick, woody valves; seeds

± biseriate 3. macrocarpa 6 Siliqua 2-5 mm wide, with herbaceous valves; seeds uniseriate

7 Sepals erecto-patent; slender annual with herbaceous stems

8 Open flowers not overtopping the buds of the inflorescence; leaves glabrous or with sparse hairs, glaucous

10. napus 8 Open flowers overtopping the buds of the inflorescence; leaves setose-ciliate, bright green 11. rapa 7 Sepals connivent; biennial or perennial with woody stems

9 Lower leaves pubescent to tomentose

10 Siliqua 25-40(-55) mm, tetragonal, abruptly contracted into a beak 6. villosa 10 Siliqua 30-100 mm, terete, gradually attenuate into beak 7. incana 9 Leaves glabrous or with sparse hairs

11 Basal leaves ± undivided, broadly ovate, spathulate or suborbicular, sinuate-crenate or -dentate

12 Petiole at least half as long as the lamina; cauline leaves usually truncate at base 8. insularis 12 Petiole not more than j as long as the lamina; cauline leaves usually auriculate at base 9. eretica 11 Basal leaves lyrate-pinnatipartite

13 Terminal lobe of basal leaves pinnatipartite, ± acute; petiole ±equalling the lamina; siliqua tetragonal

5. rupestris 13 Terminal lobe of basal leaves entire or pinnatifid, obtuse; petiole shorter than the lamina; siliqua terete 4. oleracea Upper cauline leaves sessile or petiolate, not amplexicaul

14 Siliqua appressed to the stem; beak filiform 19. nigra 14 Siliqua erecto-patent or recurved; beak attenuate to cylindrical

15 Siliqua distinctly stipitate (stalk T5-4-5mm); beak 0-5-

2-5 mm 1. elongata 15 Siliqua sessile or very shortly stipitate (stalk not more than

1-2 mm); beak 3-23 mm

16 Lower part of the inflorescence bracteate; siliqua distinctly hairy 17. procumbens 16 Inflorescence ebracteate; siliqua glabrous

17 Beak of the siliqua nearly as long as the valves; flowers nodding after anthesis 14. barrelieri 17 Beak of the siliqua shorter than the valves; flowers remaining erect after anthesis

18 Petals 5-7x1-5 mm, small and narrow; beak of the siliqua 10-23 mm 15. tournefortii 18 Petals 6-12x2-3 mm, conspicuous; beak of siliqua 3-10 mm

19 Lower leaves runcinate-pinnatifid, with 7-10 pairs of lobes 14. barrelieri 19 Lower leaves lyrate-pinnatifid or pinnatipartite, with

3-8 pairs of lobes

20 Sepals glabrous or with few scattered hairs at the apex

21 Biennial or perennial; sepals erect; siliqua stipitate; beak 3-6 mm 13. fruticulosa 21 Annual; sepals erecto-patent; siliqua sessile; beak 5-10 mm 12. juncea

20 Sepals shortly villous 22 Lower leaves with 3-5 pairs of lobes; terminal lobe unequally crenate-callose; petals 6-5 mm; beak of siliqua 3-5 mm 16. cadmea 22 Lower leaves with 5-8 pairs of lobes; terminal lobe sinuate-dentate, not callose; petals 8 mm; beak of siliqua 4-8 mm 13. fruticulosa