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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

BRASSICA MUSTARD
Annual to perennial herb; hairs simple or 0. Stem: erect, simple or branched, glabrous or hairy distally. Leaf: basal petioled, generally rosetted, dentate to pinnately lobed; cauline petioled or sessile, bases lobed or not. Inflorescence: terminal. Flower: sepals erect to ascending, base generally not sac-like; petals generally yellow, clawed. Fruit: silique, linear, dehiscent, segmented, round or 4-sided to flat parallel to septum; valves 1-veined, glabrous; terminal segment conic to cylindric, 0–3-seeded; stigma entire to ± 2-lobed. Seed: (4)10–50, in 1 row, spheric to ovoid.
35 species: Mediterranean, Eurasia, some naturalized ± worldwide. (Latin: cabbage) Brassica including most important vegetable, seed-oil, condiment crops in Brassicaceae.

Key to Brassica

1. Distal cauline leaves sessile, base lobed or clasping

2. Leaves fleshy; petals (1.5)1.8–2.5(3) cm; terminal fruit segment (3)4–11 mm ..... B. oleracea

2' Leaves not fleshy; petals 0.5–1.6 cm; terminal fruit segment (5)9–22 mm

3. Petals 10–16 mm; flowers not overtopping buds ..... B. napus

3' Petals 6–11(13) mm; flowers overtopping buds ..... B. rapa

1' Distal cauline leaves short-petioled to sessile, base tapered

4. Pedicel, fruit erect, ± appressed; pedicel (2)3–5(6) mm ..... B. nigra

4' Pedicel, fruit spreading to ascending, not appressed; pedicel (5)8–25 mm

5. Basal leaves stiff-hairy, persistent, lateral lobe pairs 4–10; petals 4–7 mm, 1.5–2(2.5) mm wide ..... B. tournefortii

5' Basal leaves ± glabrous, deciduous, lateral lobe pairs 1–3(4); petals 7–15 mm, 3–7.5 mm wide

6. Fruit 1.5–3 cm, 1.5–2 mm wide, stalk above receptacle 1–1.5 mm, terminal segment 3–6 mm ..... B. fruticulosa

6' Fruit (2)3–5(6) cm, 2–5 mm wide, stalk above receptacle 0, terminal segment (4)5–10(15) mm ..... B. juncea

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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