Morphological characteristics
Plant ecology
Herbs annual, up to 50 cm, base hairy or glabrous. Stems erect or obliquely ascending, branched, with vertical stripes, sometimes purplish. Leaf shape changes greatly, basal leaves and lower stems are stalked, stems are enlarged as ear-shaped amplexicaul, leaf blade ovate or large head-like lobulation, margins shallowly cleft or nearly entire; stem upper leaves gradually smaller , more than not split, the base of the amphibian, the edge is not neat fine teeth. Flowers small, yellow; sepals oblong, ca. 2 mm; petals spatulate, as long as sepals. Long thin cylindrical or linear long fruit, 2 cm or more in length, 1-1.5 mm wide, carried out obliquely, sometimes slightly curved, 1-2 mm long at top; seed 2 rows, mostly, small, ovoid ,brown. From April to May, the fruit matures after flowering, and flowering results sometimes appear from August to September.
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