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Rorippa subumbellata
Also called Tahoe Yellow Cress, Tahoe Yellowcress
Rorippa subumbellata is a rare species of flowering plant in the family Brassicaceae known by the common names Lake Tahoe yellowcress and Tahoe yellow cress. It is known only from the shores of Lake Tahoe, straddling the border between California and Nevada. There are an estimated fourteen populations of the plant still in existence. It grows only on the direct shoreline of the lake, occupying a seven-foot semi-aquatic zone between the high- and low-tide marks. It is directly impacted by recreational activities on the lake, enduring bombardment by boat wakes, trampling, and construction of docks and other structures.
The population sizes change with the lake's water level, with populations growing largest as water levels drop, exposing more sand habitat. High water levels may be beneficial at times, however, since they kill off competing plant species growing on the beaches.
Great Yellow-cress · Lake Watercress · Austrian yellowcress · Hoary yellowcress · Columbian yellowcress · Bluntleaf yellowcress · Curvepod yellowcress · Rorippa gigantea · Chihuahuan yellowcress · Marsh Yellow-cress · Stalkless yellowcress · Spreading yellowcress
Text excerpted from the Wikipedia article Rorippa subumbellata by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
