垂果大蒜芥 chui guo da suan jie

Sisymbrium dahuricum Turczaninow ex Fournier; S. heteromallum var. dahuricum (Turczaninow ex Fournier) Glehn ex Maximowicz; S. heteromallum var. sinense O. E. Schulz.

Herbs annual, (20-)35-100(-150) cm tall. Stems erect, branched above, sparsely to densely pubescent at least near base, usually glabrous above. Basal leaves rosulate, not fleshy; petiole 1-3(-5) cm; leaf blade broadly oblanceolate to oblong-oblanceolate in outline, lyrate- or runcinate-pinnatipartite, 3-7(-10) × (0.5-)1.5-4 cm; lateral lobes 2-5 on each side of midvein, much smaller than terminal one, oblong or lanceolate, dentate; terminal lobe lanceolate, dentate. Uppermost cauline leaves narrowly lanceolate or linear, often not lobed, entire or dentate. Fruiting pedicels reflexed or subdivaricate, slender and nearly filiform, much narrower than fruit, (0.5-)0.7-1.5 cm. Sepals narrowly oblong, ascending, 2.5-3.5(-4) × 0.7-1 mm. Petals pale yellow, narrowly spatulate, 3-5 × (0.5-)0.7-1.2(-1.5) mm; claw shorter than sepals. Filaments yellowish, erect, 2.5-3.5 mm; anthers oblong, 0.5-0.6 mm. Ovules (60-)90-160 per ovary. Fruit narrowly linear, slender, terete, (5-)6-9.5(-11) cm × 0.8-1.2 mm; valves glabrous, torulose; style cylindric, 0.5-2(-3.5) mm; stigma 2-lobed; septum not thickened. Seeds oblong, 0.8-1.1 × 0.4-0.5 mm. Fl. May-Aug, fr. Jun-Sep.

Rocky slopes, roadsides, forests, grassy areas, river banks, alpine meadows, rocky outcrops; 900-4500 m. Gansu, Hebei, Jiangsu, Jilin, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Xizang, Yunnan [India, Kazakhstan, Korea, Mongolia, Pakistan, Russia].