Rorippa palustris

Common Name: 
marsh yellowcress, common yellow-cress
Scientific Name: 
Rorippa palustris (L.) Bess.
Family Name: 
Brassicaceae (Cruciferae) - Mustard Family
Identification Notes
Life Cycle
native annual, winter annual, biennial and sometimes perennial, reproducing by seed
Stems
upright, simple to several from base, branched above, smooth or somewhat hairy, ribbed
Growth Habit of Marsh Yellowcress
Growth Habit of Marsh Yellowcress
Growth Habit of Marsh Yellowcress
Growth Habit of Marsh Yellowcress
Growth Habit of Marsh Yellowcress
Leaves
alternate, oblong to oblanceolate in outline, pinnately lobed, lobes often to mid-vein with midvein appearing winged, lobes irregularly toothed, smooth to hairy, short petioles below and sessile above
Leaves of Marsh Yellowcress
Flowers
4-petaled, yellow or greenish yellow; terminal and axillary racemes, loose
Flowers of Marsh Yellowcress
Seed Pods
silique, sometimes nearly round to usually oval or oblong, strait or often curved, smooth
Seedpods of Marsh Yellowcress
Seedpods of Marsh Yellowcress
Seedpods of Marsh Yellowcress