Dioon tomasellii explained

Dioon tomasellii is a species of cycad in the family Zamiaceae. It is endemic to Mexico, where it occurs in the states of Durango, Guerrero, Jalisco, Michoacán, and Nayarit.^[1]

This plant grows in oak and pine-oak forest and woodland habitat. Threats to the species include destruction of the habitat for agriculture and overcollection for horticultural purposes.^[1]

This species was first described in 1984.^[2] It was revised in 1997, with one variety being elevated to species status as Dioon sonorense.^[3]

Notes and References

1. Vovides, A. & Chemnick, J. 2010. Dioon tomasellii. The IUCN Red List of Threatened Species. Version 2015.2. Downloaded on 06 September 2015.
2. De Luca, P., Sabato, S., & Torres, M. V. (1984). Dion tomasellii (Zamiaceae), a new species with two varieties from western Mexico. Brittonia, 36(3), 223-227.
3. Chemnick, J., Gregory, T. J., & Salas Morales, S. (1997). A revision of Dioon tomasellii (Zamiaceae) from western Mexico, a range extension of D. merolae, and clarification of D. purpusii. Phytologia, 83(1), 1-6.