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Soliva sessilis is a plant Native to South America, but is currently an alien species in North America, Australia and many other world locations. Typical habitats that the invasive species is found include disturbed areas, compacted soils, road verges and lawns. Elevation of occurrence is generally below 1500 meters.

This species, commonly known as Field burrweed, may occur in prostrate form with a plant diameter of less than 25 cm, or in ascending form with height of two to seven cm. Stems are frequently purple-spotted or dark-colored. Leaves are pinnate, with leaflets more or less palmate. Fruits are very spiny and inflict pain when stepped upon with bare feet. This plant is considered a significant invasive species where it is found in North America, and considerable expense is given to its eradication; moreover, significant environmental impacts further arise, when chemicals are commonly used as control agents and result in water pollution from ensuing runoff.


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Supplier: C. Michael Hogan

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