Texas Wildbuds
Rorippa palustris
(Bog Yellowcress)
Rorippa palustris, Bonham State Park, Fannin Co. 5025
Rorippa palustris, Bonham State Park, Fannin Co. 5024
Rorippa palustris, Bonham State Park, Fannin Co. 5022
Rorippa palustris, Bonham State Park, Fannin Co. 5029
Rorippa palustris, Bonham State Park, Fannin Co. 5032
Rorippa palustris, Bonham State Park, Fannin Co. 5034
Rorippa palustris, Bonham State Park, Fannin Co. 6277
| Scientific Name | Rorippa palustris (Rorippa islandica) | USDA PLANTS Symbol | ROPA2 |
| Common Name | Bog Yellowcress, Bog Marshcress | ITIS Taxonomic Serial No. | 23006 |
| Family | Brassicaceae (Mustard) | SEINet Reference |
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| Description | Habitat: Streambanks, lake and pond margins. Plant: Annual, or rarely short-lived perennial with erect stems, often branched at base, 12 to 32 inches tall. Leaves: Basal leaves in a rosette, lower stem leaves alternate; basal and lower leaf blades lyrate, with the terminal lobe rounded or somewhat triangular and much larger than the lateral lobes; margins smooth, toothed, or wavy, 2-3/8 to 8 inches long and 3/8 to 2 inches wide and on stout petioles; upper stem leaves become narrower and smaller (1 to 4 inches long), lanceolate-oblong, less lobed and nearly sessile or petiolate. Inflorescence: Elongating clusters at the end of branching stems and arising from the leaf axils, with a small compact flower head at the tip; flowers are less than 1/4-inch across with 4 small yellow spatulate petals alternating with 4 greenish-yellow oblong petal-like sepals about as long as the petals; 6 yellow stamens with white anthers. Bloom Period: March to May. Fruits: : Cylindrical pods up to about 3/8-inch long, straight to slightly curved, bulging, angled upward slightly on stalks. References: Minnesota Wildflowers and SEINet; Rorippa islandica in "Manual of the Vascular Plants of Texas" by Correll and Johnston. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2026
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