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Common Name: Bradshaw's desert- parsley, Bradshaw's lomatium <br /> Family: Apiaceae (Umbelliferae) - Parsley family <br /> Status: ONHDB List 1 (threatened with extinction throughout its range) <br /> Federal: Listed Endangered <br /> State: Listed Endangered <br /> BLM: Bureau sensitive <br /> Geographic Distribution: Endemic to the Willamette Valley; known from Benton, Lane, <br /> Linn, and Marion Counties in Oregon and Clark County, Washington. The greatest <br /> concentration of sites is in Lane County, and specifically in west Eugene. There are 41 <br /> EOR's in the ONHP data base, and all but 2 are recent records. Twenty -two EOR's are <br /> located in the west Eugene area. However, some of the recently reported sites are probably <br /> no longer extant. <br /> Habitat Description: Lomatium bradshawii is restricted to two types of seasonal wetlands: <br /> wet prairies dominated by Deschampsia cespitosa, and vernally saturated seepage channels <br /> with shallow soil over bedrock. Only two sites in Marion and adjacent Linn County occur in <br /> the latter habitat, and is mapped as soils in the Stayton series. The remainder of the sites are <br /> in wet prairie, mostly on soils mapped as the Bashaw, Dayton, or Natroy series. Most sites <br /> are in fairly high quality native prairie, although a few large populations are found in areas <br /> with substantial grazing history. <br /> Growth Habit: Herbaceous taprooted perennial; plants glabrous, mostly acaulescent, 2 -6.5 <br /> dm. tall. <br /> Leaves: Grow from plant base and are ternate- pinnately dissected into linear or filiform <br /> segments 3 -10 mm. long and up to 1 mm. wide. <br /> Flowers: Light yellow, clustered in compound umbels with secondary umbels subtended by <br /> involucel bractlets ternately or biternately divided; umbel rays elongate unequally, generally <br /> only 2 -5 fertile; pedicels 2 -5 mm. long at maturity. <br /> Fruit: glabrous, 8 -13 mm long, 5 -7 mm. wide; corky- thickened wings about half as wide as <br /> the body (or less) and nearly concolorous with it; dorsal ribs inconspicuous and only slightly <br /> raised. <br /> Seed Germination Rate, Seed Bank Persistence: Berry Botanic Garden Seed Bank has <br /> shown that seed germination rates range from 80 -90 %. The soil seed bank is not persistent <br /> (Kaye et al. 1994) . <br /> Phenology: Plants emerge in March, flower mostly April to mid -May, set seed in late June <br /> or July, and are dormant mid -July - March. <br /> 10 <br />