Pugionium cornutum (L.) Gaertn.

Herbs annual, 50-100(-150) cm tall. Stems erect, many branched above. Basal leaves slightly fleshy; petiole 2-6 cm; leaf blade pinnatisect, 8-25 × 1.5-4.5 cm; lateral lobes 4-7 on each side of midvein, ultimate segments oblong, lanceolate, or rarely lanceolate-linear, 1-5 cm × 1-6 mm, entire or larger ones coarsely dentate or 3-fid, apex acute. Middle cauline leaves pinnatisect, auriculate; uppermost cauline leaves oblanceolate or linear, 3-6 cm × 2-4 mm, base attenuate, not auriculate, margin entire. Fruiting pedicels slightly stout, straight or curved upward, (1-)1.7-3 cm. Sepals 5-7 × 1.2-1.5 mm; sac of lateral pair 0.5-0.8(-1) mm. Petals whitish, linear to linear-lanceolate, 1.2-1.5 cm × 1.5-2.5 mm; claw 5-7 mm. Median filaments 6-8 mm; lateral filaments 4-5 mm; anthers oblong, 1.2-1.5 mm. Fruit transversely oblong or ovoid, excluding wings 0.7-1.2 × 1.5-2 cm; wings ensiform, straight, (2-)3-5(-6.5) cm, 3-5(-6) mm wide at base, longitudinally 3-veined, margin entire, apex acuminate; spines 8-10, to 2 cm × 2 mm, basal 4 pointing downward, subparallel to pedicel, much longer than the others, remaining 4 or 6 horizontal or erect; style absent. Seeds brown, oblong, 8-10 × 3-4 mm. Fl. Jun-Aug, fr. Jul-Sep.

Nei Mongol, Ningxia, Shaanxi.

* Desert dunes; 1000-1100 m.

Bunias cornuta Linnaeus, Sp. Pl. 2: 669. 1753; Myagrum cornutum (Lamarck) Linnaeus.

Pugionium cornutum là một loài thực vật có hoa trong họ Cải. Loài này được (L.) Gaertn. miêu tả khoa học đầu tiên năm 1791.

沙芥（学名：Pugionium cornutum），为十字花科沙芥属下的一个植物种。