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46. Barbarea R. Brown in W. T. Aiton, Hortus Kew. 4: 109. 1812.
[nom. cons.]
山芥属 shan jie shu
Herbs biennial or perennial, with rhizomes or woody caudex, rarely annuals. Trichomes simple or absent. Stems erect, sometimes prostrate, angular. Basal leaves rosulate or not, lyrate-pinnatifid or pinnatisect, rarely undivided. Cauline leaves petiolate or sessile, auriculate or amplexicaul, entire, dentate, pinnatifid, or pinnatisect. Racemes many flowered, often ebracteate; rachis striate. Fruitng pedicels slender or thickened, erect or divaricate. Sepals oblong or linear, erect or spreading, base of lateral pair saccate. Petals yellow, rarely creamy white; blade spatulate or oblanceolate, apex obtuse or rounded; claw obscurely differentiated. Stamens 6, tetradynamous; filaments not dilated at base; anthers oblong, obtuse at apex. Nectar glands 4, median pair toothlike; lateral pair annular. Ovules 10-40 per ovary. Fruit dehiscent siliques, linear or rarely elliptic-linear, terete, 4-angled, or latiseptate, sessile or shortly stipitate; valves with a prominent midvein and distinct marginal veins, mostly glabrous, smooth or torulose; replum rounded; septum complete; style obsolete or to 5 mm; stigma capitate, entire or slightly 2-lobed. Seeds uniseriate or subbiseriate, wingless, margined, or winged, oblong, ovoid, or orbicular, plump or slightly flattened; seed coat reticulate, rarely tuberculate, not mucilaginous when wetted; cotyledons accumbent.
About 22 species: mainly in SW Asia, Australia, Europe, and North America; five species (two endemic, one introduced) in China.
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| 1 |
Terminal lobe of basal and lowermost cauline leaves nearly as large as adjacent lateral lobes; uppermost cauline leaves with (4-)6-10(-12) lateral lobes; plants perennial |
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1 B. taiwaniana |
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Terminal lobe of basal and lowermost cauline leaves much larger than adjacent lateral lobes; uppermost cauline leaves unlobed or with 1-4 lateral lobes; herbs annual or biennial, rarely perennial. |
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(2) |
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| 2 (1) |
Fruit strongly compressed, 2-2.5 wide; valve apex retuse; seeds 1.6-2 × 1.4-1.7 mm, winged all around |
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2 B. hongii |
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Fruit terete, quadrangular, or slightly compressed, 1-1.8(-2) mm wide; valve apex obtuse or subacute; seeds smaller, wingless. |
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(3) |
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| 3 (2) |
Uppermost cauline leaves pinnatisect into linear or linear-oblong lateral lobes; fruit 1.5-1.8(-2) mm wide |
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4 B. intermedia |
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Uppermost cauline leaves undivided, dentate, or lyrate-pinnatifid into oblong or ovate lateral lobes; fruit 1-1.5 mm wide. |
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(4) |
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| 4 (3) |
Style in fruit stout, 0.5-1(-1.2) mm; uppermost cauline leaves usually lyrate-pinnatifid |
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3 B. orthoceras |
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Style in fruit slender, 1.5-3 mm; uppermost cauline leaves undivided |
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5 B. vulgaris |
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Lower Taxa
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