Native and non-native vascular plants at Fisherman Island, Virginia, collected in 1975-76 by Boule were compared with the 222 taxa collected in the floristic survey of 1993-1995 by Stalter and Lamont. In contingency table analysis of log-likelihood, the frequency of non-native vascular plants within the highly disturbed ruderal plant community at Fisherman Island is highly significantly greater (64.7%, G = 59, 1 df, P < 0.0001) than at the sand dune, salt marsh, immature maritime forest, and swale (0%, 3.5%, 2.9%, 23.9%, respectively), where human disturbance is minimal. There is a highly statistically significant difference between the pattern in which native species versus non-native species sort themselves out across the five communities (G = 82, 4 df, P < 0.0001). The overall percentage of 20.1% for non-native vascular taxa at Fisherman Island in 1975-76 collected by Boule is not significantly different from the overall percentage of 22.1% for non-native vascular plants collected in this study (G = 0.19, 1 df, P = 0.66).