An Identification key of Turkish wild Brassica species;

1. Plant biennial or perennial................................................................................................................................................................. 2 +. Plant annual ....................................................................................................................................................................................... 5

2. Stem leaves amplexicaul ...................................................................................................................................................... 1. cretica +. Stem leaves not amplexicaul ............................................................................................................................................................. 3

3. Stem divaricately branched: infrutescence corymbose .............................................................................................. 3. beytepeensis + Stem not divaricately branched: infrutescence racemose or panicle................................................................................................. 4

4. Stem leaves many, leaf blade oblong, oblong-ovate, or lanceolate.................................................................................. 2. elongata +. Stem leaves few, leaf blade linear or narrow oblong............................................................................................. 8. huseyin-duralii

5. Siliquae deflexed; beak not tapering ................................................................................................................................... 4. deflexa +. Siliquae erect, erecto-patent, or spreading beak tapering.................................................................................................................. 6

6. Siliquae 10–17 mm, tightly adpressed to stem....................................................................................................................... 5. nigra +. Siliquae 30–80 mm; erect, erecto-patent, or spreading ..................................................................................................................... 7

7. Beak 10–20 mm; seeds 1.2–1.6 mm ............................................................................................................................. 6. tournefortii +. Beak 5–10 mm; seeds c. 1 mm ............................................................................................................................................. 7. juncea