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Map Layer Info

     
 
Plant Distribution - Euphorbia esula, Leafy Spurge

What this map layer shows:

Where Leafy Spurge, an invasive plant species, is found, by county.
opens the USDA Natural Resources Conservations Service home page
Background Information
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Leafy spurge (scientific name: Euphorbia esula) is an invasive plant species that displaces native vegetation in prairie habitats and fields in the United States. The USDA Natural Resources Conservation Service collects information on leafy spurge and other invasive species in its PLANTS database. These data are derived primarily by looking at actual plant specimens gathered from several institutions. The PLANTS database includes information on the institution where a specimen resides, the State and county where it was collected, and the year of collection. This information allows an analysis of the spread of noxious weeds over time. However, because a relatively small number of institutions were consulted to build this database, and owing to the general unreliability of county-level distribution data (not all counties have been surveyed with equal effort, not all plant populations have been found, plant populations sometimes disappear, and plants sometimes move rapidly or are misidentified), these data provide only a rough cumulative record of the distribution of this plant.

The Plant Distribution - Euphorbia esula, Leafy Spurge database shows county-level distribution of this species in the United States. More detailed information on leafy spurge is available from the Leafy Spurge page in the PLANTS database.


Related Links:

If you download the data of Leafy Spurge distribution you may also want to download the 2000 County Boundaries data. These two map layers can be used together to create a map of Leafy Spurge distribution.
Download 2000 County Boundaries