Crassula helmsii
Crassula helmsii
(swamp stonecrop)
Plants
Exotic

Impact ID5651
Impact TypeCompetition
Study TypeObservational
Study LocationField
Impact DescriptionIt was observed that for every 10% increase in Crassula helmsii there was a 6% decrease in the amount of bare ground and 5% decrease in the amount of native vegetation.
Reference39943
Great Lakes RegionNo
Cost 
LocationNew Forest, England

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Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/13/2026].

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