[Biscuitroots and Desert Parsleys: The Genus Lomatium in the Columbia River Gorge of Oregon and Washington]

Lomatium tamanitchii as photographed in clay soils at the junction of Old Highway 8 and WA SR 14 west of Roosevelt, WA in the eastern Columbia River Gorge on April 18, 2010.

Close-ups of the leaves of Lomatium tamanitchii as photographed at the junction of Old Highway 8 and WA SR 14 west of Roosevelt, WA in the eastern Columbia River Gorge on April 18, 2010. The leaves of this species are all basal. No stem leaves are present.

Close-ups of the flowers, immature fruits, and narrow bracts of the involucel of Lomatium tamanitchii as photographed at the junction of Old Highway 8 and WA SR 14 west of Roosevelt, WA in the eastern Columbia River Gorge on April 18, 2010.

Different examples of Lomatium tamanitchii as photographed at the junction of Old Highway 8 and WA SR 14 west of Roosevelt, WA in the eastern Columbia River Gorge on April 18, 2010.

Typical clay soil habitat of Lomatium tamanitchii as photographed at the junction of Old Highway 8 and WA SR 14 west of Roosevelt, WA in the eastern Columbia River Gorge on April 18, 2010. Other species present include tarweed fiddleneck (Amsinckia lycopsoides), upland larkspur (Delphinium nuttallianum var. nuttallianum) and bicolored cluster lily (Triteleia grandiflora ssp. howellii). This particular site has been recently plowed and is being converted into a vineyard.

Tamanitchii desert parsley as seen along a road north of Old Highway 8 several miles northwest of Roosevelt, WA..........May 17, 2014.