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| Marsh yellowcress - Rorippa palustris L. (Bess) | |||||
| Weed Identification in Nurseries and Landscapes > Marsh yellowcress | |||||
| Life cycle: Taprooted annual or biennial. Occasionally, a weak perennial. Leaves: Alternate, variably shaped leaves initially develop from a basal rosette. Leaves are deeply lobed with a large terminal lobe and three to seven other lobes. The upper stem leaves are smaller with lobed to toothed margins and, occasionally, winged petioles with earlobe-shaped bases. Stems: Branched or unbranched stems arise from a basal rosette to flower, usually less than 2 feet in height. Flowers and fruit: Small, light yellow flowers with four petals are found in terminal clusters. Fruit are small, globe- to short cylinder-shaped capsules with a slight upward curve. Each capsule contains numerous, tiny, yellowish brown seeds. Reproduction: Seeds. |
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