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Oregon listed plants, Union-Yamhill
Oregon listed plants by county
Click on county for a list of threatened and endangered plants that occur there.
 
 
Baker - Jackson counties
Baker through Jackson counties
 
Jefferson - Umatilla counties
Jefferson through Umatilla counties
 
Union
Number of state-listed plant species which currently occur or have occurred in Union County:  2
 Pleuropogon oregonus (Oregon semaphore grass)
 Thelypodium howellii ssp. spectabilis (Howell’s spectacular thelypody)


 
 
Wallowa
Number of state-listed plant species which currently occur or have occurred in Wallowa County:  3
 Lomatium greenmanii (Greenman’s lomatium)
 Mirabilis macfarlanei (Macfarlane’s four-o’clock)
 Silene spaldingii (Spalding’s campion)




 
Wasco
Number of state-listed plant species which currently occur or have occurred in Wasco County:  2
 Artemisia campestris var. wormskioldii (northern wormwood)
 Astragalus tyghensis (Tygh Valley milkvetch)




 
Washington
Number of state-listed plant species which currently occur or have occurred in Washington County:  4
 Delphinium leucophaeum (white rock larkspur)
 Erigeron decumbens (Willamette daisy)
 Lupinus oreganus (Kincaid’s lupine)
 Sidalcea nelsoniana (Nelson’s checkermallow)




 
Wheeler
Number of state-listed plant species which currently occur or have occurred in Wheeler County:  1
 Thelypodium eucosmum (arrow-leaf thelypody)




 
Yamhill
Number of state-listed plant species which currently occur or have occurred in Yamhill County:  5
 Delphinium leucophaeum (white rock larkspur)
 Erigeron decumbens (Willamette daisy)
 Erythronium elegans (coast range fawn lily)
 Lupinus oreganus (Kincaid’s lupine)
 Sidalcea nelsoniana (Nelson’s checkermallow)