Entry_ID: (required) Entry_Title: Plant Distribution - Euphorbia esula, Leafy Spurge Group: Data_Set_Citation Originator(s): U.S. Department of Agriculture, Natural Resources Conservation Service Title: Plant Distribution - Euphorbia esula, Leafy Spurge Publication_Date: 200008 Publication_Place: Reston, VA Publisher: National Atlas of the United States Data_Presentation_Form: Database URL: End_Group Keyword: biota Group: Temporal_Coverage Start_date: 1827 Stop_date: 1995 End_Group Data_Set_Progress: Complete Group: Spatial_Coverage Southernmost_Latitude: 17 Northernmost_Latitude: 72 Westernmost_Longitude: 170 Easternmost_Longitude: -64 End_Group Location: United States Location: Alabama Location: Alaska Location: Arizona Location: Arkansas Location: California Location: Colorado Location: Connecticut Location: Delaware Location: District of Columbia Location: Florida Location: Georgia Location: Hawaii Location: Idaho Location: Illinois Location: Indiana Location: Iowa Location: Kansas Location: Kentucky Location: Louisiana Location: Maine Location: Maryland Location: Massachusetts Location: Michigan Location: Minnesota Location: Mississippi Location: Missouri Location: Montana Location: Nebraska Location: Nevada Location: New Hampshire Location: New Jersey Location: New Mexico Location: New York Location: North Carolina Location: North Dakota Location: Ohio Location: Oklahoma Location: Oregon Location: Pennsylvania Location: Rhode Island Location: South Carolina Location: South Dakota Location: Tennessee Location: Texas Location: Utah Location: Vermont Location: Virginia Location: Washington Location: West Virginia Location: Wisconsin Location: Wyoming Location: Puerto Rico Location: U.S. Virgin Islands Location: Virgin Islands Location: USA Group: Data_Resolution End_Group Access_Constraints: None Use_Constraints: None. Acknowledgment of the USDA Natural Resources Conservation Service and (or) the National Atlas of the United States of America would be appreciated in products derived from these data. Originating_Center: (required) Group: Data_Center Data_Center_Name: Earth Science Information Center, U.S. Geological Survey Group: Data_Center_Contact Last_name: Earth Science Information Center, U.S. Geological Survey First_name: N/A Phone: 1-888-ASK-USGS (1-888-275-8747) Phone: 703-648-5920 Group: Address 507 National Center Reston, VA 20192 End_Group End_Group End_Group Storage_Medium: Microsoft Excel97 converted to dBASE IV for the National Atlas of the United States of America. Group: Distribution Distribution_Media: online Distribution_Format : DBF Fees: There is no charge for the data set. End_Group Group: Reference End_Group Group: Summary These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. The National Atlas of the United States assumes no responsibility for the use of these data. This data set portrays the county-level distribution of Euphorbia esula (common name - leafy spurge) in the United States of America. These data come from the U.S. Department of Agriculture (USDA) Natural Resources Conservation Service's PLANTS Database, which is the de facto Federal standard for information about the distribution and nomenclature of U.S. plants. These data are primarily derived from examination of herbarium specimens of leafy spurge gathered from several institutions. The essence of each record is the institution where the specimen resides, the state and county where it was collected, and the year of collection. Thus these data are structured to allow an analysis of the spread of this introduced noxious weed over time. Note that there are hundreds of herbaria in the United States, and a relatively small number were consulted to build this data set. For this reason, as well as the general unreliability of county- level distribution data (not all counties have been surveyed with equal effort, not all populations have been found, populations sometimes disappear, and plants sometimes move rapidly or are misidentified), these data can provide only a rough cumulative record of the distribution of this plant. To create maps that are similar to the maps in the National Atlas , wdeupht.dbf can be joined to the 2000 county boundaries available from the National Atlas raw data download page, . For more information on leafy spurge, please see End_Group Group: DIF_Author Last_name: Urban-Mathieux First_name: Gita Email: atlasmail@usgs.gov Phone: 703-648-5175 Group: Address 12201 Sunrise Valley Dr Reston, VA 20192 End_Group End_Group DIF_Revision_Date: 20060426 Science_Review_Date: