Northern Prairie Wildlife Research Center
Western Wetland Flora
Field Office Guide to Plant Species
Rorippa sinuata (Nutt.) A. Hitchc.
- Family: Mustard (Cruciferae)
- Flowering: April-September
- Field Marks: Unlike other species of Rorippa, this one has yellow petals 1/4-1/3 inch long, creeping rootstocks, and slender, more or less straight, pods.
- Habitat: Moist areas.
- Habit: Perennial herb with creeping rootstocks.
- Stems: Upright, branched, up to 1 foot tall, smooth.
- Leaves: Alternate, deeply pinnately divided into 11-19 lobes, the lobes linear to oblong, smooth.
- Flowers: Several in terminal racemes; each flower with a stalk 1/4-1/2 inch long.
- Sepals: 4, green, free from each other, up to 1/6 inch long.
- Petals: 4, yellow, free from each other, 1/6-1/4 inch long.
- Stamens: 6.
- Pistils: Ovary superior.
- Fruits: Pods linear, more or less straight, 1/3-1/2 inch long, smooth, with small brown seeds.
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