NPSpecies

It is unknown whether this taxon is native to North America. Most authors believe it is probably non-native (Eurasian). Legacy NPSpecies information may no longer be applicable, please remove if it is not applicable. In legacy NPSpecies Weedy value was Yes with comment: Somewhat weedy, but not invasive in this Park Unit; often decreasing with time after disturbance or with improved ecological condition; of little or no management concern.

Park Species Detail: Habitat in this Park Unit = Generally restricted to riparian areas or mesic sites. Data derivation and tracking accountability (do not delete): Original data for this Park-Name Profile record were derived and entered by Steve J. Popovich, 1999-2005, team leader under University of Idaho Contract P.O. No. P0011391, based upon a preponderance of evidence and the best scientific and commercial data available, including personal knowledge of one or more of the following individuals: Steve J. Popovich (formerly Botanist, USDI BLM Idaho Shoshone Field Office, 1991-1997, Shoshone, ID, USA; Research Plant Ecologist, 1997-1999, USDI USGS, FRESC, Corvallis, OR, USA; intermittent private contractor 1999-2005; currently Botanist, USDA USFS, Fort Collins, CO, USA); Patricia L. Packard, Carol A. M. Prentice, and Linda C. Smithman (Herbarium CIC, Caldwell, ID, USA); Michael Curto (Herbaria OBI, San Luis Obispo, CA, USA, and UTC, Logan, UT, USA); Emerenciana 'Mering' G. Hurd (USDA USFS Intermountain Research Station, Boise, ID, USA); Nancy K. Cole (former Plant Ecologist, Idaho Power, Boise, ID, USA); Roger Rosentreter (USDI BLM Idaho State Office Botanist, Boise, ID, USA); N. Duane Atwood and James L. Reveal (Herbarium BRY, Provo, UT, USA); Robert K. Moseley (former Botanist, Idaho Conservation Data Center, Boise, ID, USA); Sandra Robins and Curtis Bjork (Lambert Erickson Weed Diagnostic Laboratory, University of Idaho, Moscow, ID, USA); the regional floral manuals Intermountain Flora - Vascular Plants of the Intermountain West, USA; A Utah Flora, and Flora of the Pacific Northwest; various appropriate botanical monographs; USDA NRCS PLANTS database as of 4/2005; Natural Heritage Program, Idaho Conservation Data Center database as of 4/2005; and local Unit National Park Service staff., Park Species Data Source: Original data derived by Steve J. Popovich 1992-2005 based upon a preponderance of evidence and the best scientific and commercial data available, University of Idaho Contract P.O. No. P0011391.