Herbs annual or biennial, 40-120 cm tall. Stems erect, much branched above, glabrous, slightly glaucous. Leaves glabrous or sparsely pilose. Basal leaves soon withered; petiole (0.5-)1-5 cm; leaf blade obovate-oblong, oblanceolate, or spatulate, (2-)8-9(-14) × (0.5-)1-3 cm, margin entire or dentate. Middle cauline leaves sessile; leaf blade narrowly oblong, lanceolate, or lanceolate-ovate, (1-)3-8(-11) × (0.3-)0.5-2(-3) cm, base auriculate or amplexicaul, margin entire, apex obtuse or subacute. Fruiting pedicels slender, thickened and subclavate at apex, 4-8 mm, glabrous. Sepals oblong, 1.5-1.8 × 0.5-0.8 mm, glabrous. Petals yellow, oblong-oblanceolate, 2.5-3 × 0.5-0.8(-1) mm, apex obtuse. Filaments 1-1.8 mm; anthers ovate, 0.4-0.5 mm. Fruit oblong or elliptic, rarely oblong-obovate, (0.7-)0.9-1.2(-1.5) cm × 3-5(-6) mm, broader at middle, glabrous or sparsely to densely pubescent, base and apex rounded to subacute, winged all around; locule (3-)4-6(-9) mm, usually conspicuously 3-ribbed or with a prominent midvein and 2 lateral ones, rarely 2-seeded; apical wings (1.5-)2-3.5 mm wide. Seeds yellowish brown, narrowly oblong, 2.5-3.5 × 0.9-1.3 mm. Fl. and fr. Jun-Aug. 2n = 28*.
Home