离子芥 li zi jie

Raphanus tenellus Pallas, Reise Russ. Reich. 3: 741. 1776; R. monnetii H. Léveillé.

Herbs annual, (5-)10-40(-56) cm tall, with multicellular glandular trichomes, these sometimes mixed with simple ones. Stems erect, branched above. Basal leaves not rosulate, often withered by flowering; petiole (0.5-)1-2(-4) cm; leaf blade oblanceolate or oblong, (1.5-)2.5-8(-13) × (0.4-)0.8-2(-3) cm, glandular, base cuneate or attenuate, margin sinuate-dentate to dentate, apex acute. Cauline leaves similar to basal ones, progressively reduced in size upward, uppermost often entire and subsessile. Flowers in racemes. Fruiting pedicels stout, (2-)3-5 mm, divaricate, glandular. Sepals purplish, linear, (3-)4-5(-6) × 0.5-0.7 mm. Petals purple, oblanceolate, 8-10(-12) × 1-2 mm, obtuse at apex; claw 6-7 mm. Filaments 4-6(-7) mm; anthers narrowly oblong, ca. 1.5 mm. Fruit linear-cylindric, (1.4-)1.8-2.5(-3) cm × 1.5-2 mm, slightly curved upward, corky, subtorulose, with 8-12 constrictions on each side, glandular or rarely glabrescent; style 1-1.7(-2.1) cm. Seeds brown, oblong, 1-1.4 × 0.8-1 mm. Fl. Apr-Jun, fr. May-Aug. 2n = 14.

Pastures, roadsides, fields, waste areas; 100-2200 m. Anhui, Gansu, Hebei, Henan, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shandong, Shanxi, Xinjiang [Afghanistan, India, Kashmir, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; N Africa, SW Asia, Europe].