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FOC | Family List | FOC Vol. 8 | Brassicaceae | Brassica

6. Brassica elongata Ehrhart, Beitr. Naturk. 7: 159. 1792.

短喙芥 duan hui jie

Brassica brevirostrata Z. X. An; B. persica Boissier & Hohenacker.

Herbs biennial or perennial, (40-)50-100(-130) cm tall, basally hirsute or rarely glabrous. Stems erect, branched basally and above. Basal and lowermost cauline leaves long petiolate; leaf blade oblanceolate, elliptic, oblong-ovate, or oblong-linear, (3-)5-14(-20) × (0.5-)1-3.5(-6) cm, base cuneate or attenuate, margin dentate, repand, or entire. Upper cauline leaves petiolate or subsessile, linear, oblanceolate-linear, lanceolate, or oblong, to 8 cm, base attenuate or cuneate, margin entire or dentate. Fruiting pedicels divaricate, (0.6-)0.8-1.8 cm. Sepals oblong, 3-4(-4.5) × 1-1.5 mm, erect or rarely ascending. Petals yellow, (5-)6-8.5(-10) × 2.5-3.5(-4) mm, obovate, apex rounded; claw 2.5-4 cm. Filaments 3.5-4.5 mm; anthers ovate, 1-1.5 mm. Fruit linear, (1.5-)2-4(-4.8) cm × (1-)1.5-2 mm, terete or slightly flattened, borne on a gynophore (0.8-)1.5-4(-5) mm, divaricate; valvular segment (1.2-)1.6-4(-4.5) cm, (2-)5-11(-13)-seeded per locule; valves with a prominent midvein, torulose; terminal segment linear, stylelike, (0.5-)1-2.5(-3) mm, seedless. Seeds brown or grayish, globose, 1-1.5 mm in diam., minutely reticulate. Fl. and fr. Jun-Aug. 2n = 22.

Steppe, disturbed areas; 900-2400 m. Xinjiang [Afghanistan, Kazakhstan, Russia (W Siberia), Tajikistan, Turkmenistan, Uzbekistan; SW Asia, Europe; naturalized in Australia and North America].

The protologue of Brassica brevirostrata (Fl. Xinjiang. 2(2): 374. 1995) represents the first record of B. elongata from China. It is not known whether the species has recently been introduced to China or its native range in China has long been overlooked.


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