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Tahoe Yellow Cress
Rorippa subumbellata
  
0 Nurseries Carry This Plant

About Tahoe Yellow Cress (Rorippa subumbellata) 0 Nurseries Carry This Plant Rorippa subumbellata is a rare species of flowering plant in the mustard family 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. This perennial herb produces spreading, branching, hairy stems up to 20 centimeters long. The leaves are 1 to 3 centimeters long, oblong or lance-shaped, and wavy along the edges or divided into lobes. The inflorescence is a compact raceme of mustardlike flowers with yellow petals each about 3 millimeters long. The fruit is a hairless silique a few millimeters wide containing tiny seeds.
Plant Description
Plant Type
Plant Type
Perennial herb

Size
Size
7.9 in tall

Flower Color
Flower Color
Yellow

Wildlife Supported
 


 
Butterflies & moths hosted ( 3 likely * ) SHOW ALL
*
Anthocharis sara Image
Sara Orangetip Anthocharis saraAnthocharis sara
*
Helicoverpa zea Image
Corn Earworm Moth Helicoverpa zeaHelicoverpa zea
*
Xanthorhoe labradorensis Image
Labrador Carpet Xanthorhoe labradorensisXanthorhoe labradorensis

Landscaping Information
Natural Setting
Climate
Climate
Annual Precipitation: 18.7" - 69.0", Summer Precipitation: 0.95" - 2.23", Coldest Month: 29.4" - 33.4", Hottest Month: 49.9" - 59.2", Humidity: 0.89" - 15.21", Elevation: 6264" - 9169"

Alternative Names
Common Names: Lake Tahoe Yellowcress


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Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora


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