Marsh cress
Rorippa palustris
Plant is glabrous or sparsely pubescent along leaf ribs. Stem is 10-70 cm in height, erect or ascending, mainly branched. Lower leaves are petiolate, lyrate. Stem leaves are sessile, auriculate, pinnatipartite with oblong, serrated lobes. Flowers are small; petals are light yellow, a little longer than sepals. Fruit is silicle. Silicles are oblong, slightly curved, swollen, with very short style and glabrous valves without ribs, a little shorter than peduncles. Seeds are horizontal, slightly flattened upward, grayish or yellowish brown, knobby, glittering on the knobs. This plant flowers and bears fruits in June-September. Seed-propagated plant. Newly ripened seeds have a germination capacity of 21%; up to 100% of seeds germinate after overwintering in soil at a depth of 2 cm. Mass seedlings appear from the end of spring until the beginning of autumn; summer and autumn seedlings overwinter.
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Plant Protection Products
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