Hawaiian Ecosystem Modifying Invasive Plants (EMIP's) selected for this analysis.

1Habitat is described by a broad habitat descriptor defining the ecotype and year naturalized (or first collected) as inferred from [43], [122].2The moistures index developed by Price et al. [42] defined species specific moisture types from collection data.3For ease of interpretation each species was coded using a representative six letter combination.4Risk Assessment (RA) scores and categories defined by Dahler et al.[19] and Pheloung et al.[41] accessed from: http://www.hear.org/pier/index.htm.**Based on estimates for Australia [41] accessed from: http://www.hear.org/pier/wra/australia/sepal-wra.htm.