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Which Brassica species produces turnips and bok choy?

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broccoli — Brassicales Broccoli (*Brassica oleracea*, variety *italica*).

Both turnips and bok choy are produced by the same species, Brassica rapa.123

While they share the same scientific name, they are classified as different varieties of the plant:
* Turnip: Brassica rapa, variety rapa.23
* Bok choy: Brassica rapa, variety chinensis.13

Both vegetables belong to the mustard family, Brassicaceae, which is part of the larger order Brassicales.124