旗杆芥 qi gan jie

Arabis glabra (Linnaeus) Bernhardi; A. perfoliata Lamarck; A. pseudoturritis Boissier & Heldreich; Turritis glabra var. lilacina O. E. Schulz; T. pseudoturritis (Boissier & Heldreich) Velenovsky.

Herbs biennial, rarely perennial, (30-)40-120(-150) cm tall, sparsely to densely pilose basally with simple and short-stalked, forked trichomes, glabrous and glaucous above. Stems erect, simple basally, often branched above. Basal leaves rosulate, petiolate; leaf blade spatulate, oblanceolate, or oblong, (4-)5-12(-15) × 1-3 cm, pubescent or rarely glabrous, margin pinnatifid, sinuate, dentate, repand, or rarely entire, apex obtuse. Cauline leaves sessile, lanceolate, oblong-elliptic, or ovate, 2-9(-12) × (0.5-)1-2.5(-3.5) cm, base sagittate or auriculate, margin dentate or entire, apex acute. Fruiting pedicels erect, (0.6-)0.7-1.6(-2) cm, slender, appressed to rachis, glabrous. Sepals oblong or oblong-linear, (2.5-)3-5 × 0.5-1.2 mm, glabrous. Petals pale yellow, creamy white, or rarely pink, linear-oblanceolate, narrowly spatulate, or rarely linear, 5-8.5 × 1.3-1.7 mm. Filaments slender, lateral pair 2.5-4.5 mm, median pairs 3.5-6.5 mm; anthers narrowly oblong, 0.7-1.5 mm. Fruit linear, (3-)4-9(-10) cm × 0.7-1.5 mm, erect, appressed to rachis, subterete-quadrangular; style 0.5-0.8(-1) mm. Seeds brown, oblong or suborbicular, 0.6-1.2 × 0.5-0.9 mm. Fl. Apr-Jul, fr. May-Aug. 2n = 12, 16, 32.

Mountain slopes, forest margins, valleys, fields, meadows, woods, fields, river banks, roadsides; 100-3500 m. Jiangsu, Liaoning, Shandong, Xinjiang, Zhejiang [Afghanistan, India, Japan, Kashmir, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; N Africa, SW Asia, Europe, North America; naturalized in Australia].