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- •01/20/95 10:56 e503 231 6195 PTLD. FIFLD STA. [A014 <br /> DRAFT 3 <br /> Oregon coyote thistle .. <br /> Eryngium petiolatum is listed by the Washington State Department of Natural Resources <br /> as a threatened species. This species is rare in the State of Washington:but is widespread <br /> within the State Of Oregon where there are more than 100 occurrences. Within the State <br /> of Wasbington_ because .of its rarity(occuriing at only three known sites), E petiolatum is .. <br /> vulnerable to extirpation; within the State of Washington. E petiolatum was first collected <br /> by David Douglas in 1832 on the plains oftthe Multnomah for which the type is based; <br /> Typically, Oregon coyote thistle occupies Iow'ground, especially in places submerged' in <br /> the spring and drier in the summer and is often associated with Lomatiium bradshawii. It <br /> is distributed from the Rogue River Valley of Southern Oregon northward through.the <br /> Umpqua and Willamette Valleys into Washington and extending: eastward in the Columbia <br /> River Gorge in Oregon and Washington to Hood River: Within Oregon, it occurs from <br /> Washington County south to Josephine County , and is common in the .Rogue, Umpqua <br /> • and Southern Willamette Valleys and Tare north of Eugene.. In Washington it occurs at <br /> one site (Green Mountain Resort) in Clark County and two sites in Klickitat County: <br /> Small- flowered trillium <br /> Trillium parviflorum is listed as sensitive by the Washington State Department of Natural <br /> Resources. Woodlots.containing suitable T parviflorum habitat have been declining due <br /> to increased agricultural use and urbanization. This species ranges from Pierce and <br /> Thurston Counties in Washington southward through western Washington into northern ' <br /> Oregon, apparently reaching a southern limit in Polk County: T. parviflo'rum was first <br /> collected by Soukup with Dusek and Graves on Fort Lewis Military Reservation, Pierce <br /> 'County; Washington on March 21, 1979. . It occurs on seasonal.wet to soggy soils of the <br /> flat oak woods with various shrubs and other herbaceous . species. In' Oregon this species <br /> occurs in Yamhill and Polk Counties And -is extirpated "from Marion County. In <br /> Washington there are at least 20 locations in Clark, Lewis, Pierce and, Thurston Counties, <br /> including one location at the Green Mountain Resort: <br /> V. Problems Facing the Species <br /> A. The present or threatened destruction, modification, or curtailment of its habitat or range. <br /> Threats to the wet prairie habitat of Lomatium bradshawii and Eryngium petiolatum include <br /> encroaching agriculture and residential and industrial development. Historically, wet prairie areas <br /> were maintained by Native Americans by periodic burning. Fire suppression has resulted in the <br /> invasion of these wet prairies by woody vegetation, especially by ash (Fraxnus latifolia) <br /> . seedlings. At the Green Mountain Resort site, encroachment by ash seedling has been observed, <br /> especially in the wet prairie areas along the western property Wild rose( Rosa spp.)may also <br /> be invading the habitat of Bradshaw's lomatium. <br /> • <br />