Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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High Cascade Range. Along USFS Rd 28N29/Ponderosa Way 0.5 km northwest of Black Rock; south-facing slope overlooking Mill Creek. At and near mapped spring.
Between Paynes Creek and Cohasset on Ponderosa Way (Forest Rd. 28N29) 17.8 mi south of Plum Creek Rd., 2.6 mi north of the bridge on Mill Creek at Black Rock.
Northern Sacramento Valley; south bank of Mill Creek; ca. 0.3 mile east of confluence with Sacramento River; gravel bar in active channel of Mill Creek.
High Cascade Range. Along USFS Rd 28N29/Ponderosa Way 0.5 mi northwest of Black Rock; south-facing slope overlooking Mill Creek. Barkley Mountain 7.5' quad.
2.6 mi n of the bridge on Mill Creek at Black Rock, between Paynes Creek and Cohasset on Ponderosa Way (Forest Rd 28N29) 17.8 mi s of Plum Creek Road Mill Creek; Ponderosa Way