stocktonii, Perityle socorrosensis, Spermacoce nesiotica and Zapoteca formosa ssp. rosei are Revillagigedo endemics which Clarion shares with either San Benedicto or Socorro. Whether Teucrium townsendii var. townsendii is the same plant as on San Benedicto is not conclusively determined. There has not been recent dedicated research on the impact the sheep and rabbits had on the local flora. While no plants seem to have gone extinct on the other Revillagigedo Islands, Clarion is one most heavily affected by introduced herbivores. References Citations Bibliography Further reading Johnston, Ivan M. (1931): The flora of the Revillagigedo Islands. Proceedings of the California Academy of Sciences (Series 4) 20(2): 9–104. External links Scuba Diving at Clarion Island Volcanoes of Colima Volcanoes of the Pacific Ocean Islands of Colima Pacific islands of Mexico Uninhabited islands of Mexico