Dioon holmgrenii

Dioon holmgrenii
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Cycadophyta
Class: Cycadopsida
Order: Cycadales
Family: Zamiaceae
Genus: Dioon
Species:
D. holmgrenii
Binomial name
Dioon holmgrenii
De Luca, Sabato & Vázq. Torres 1981

Dioon holmgrenii is a species of cycad in the family Zamiaceae. It is endemic to Mexico, where it occurs only in an area just to the southwest of San Gabriel Mixtepec, Oaxaca.[2] It is known by the common name palma del sol (sun palm).[2]

This plant grows in humid pine-oak forest habitats.

There are only two known subpopulations.[2]

Mutualism

The beetle Pharaxonotha occidentalis is in an obligatory mutualistic relationship with Dioon holmgrenii, living and breeding in male cones and consuming pollen and cone tissues while serving as a pollinating vector by transferring pollen to female cones.[3]

References

  1. ^ Chemnick, J.; Gregory, T.; Morales S. (2010). "Dioon holmgrenii". IUCN Red List of Threatened Species. 2010 e.T42129A10660365. doi:10.2305/IUCN.UK.2010-3.RLTS.T42129A10660365.en. Retrieved 20 November 2021.
  2. ^ a b c Chemnick, J.; Gregory, T.; Morales S. (2010). "Dioon holmgrenii". IUCN Red List of Threatened Species. 2010 e.T42129A10660365. doi:10.2305/IUCN.UK.2010-3.RLTS.T42129A10660365.en. Retrieved 14 January 2020.
  3. ^ Tang, William; Skelley, Paul E.; Taylor B, Alberto S.; Salzman, Shayla (April 5, 2024). "Review of Pharaxonotha Reitter (Coleoptera: Erotylidae: Pharaxonothinae) inhabiting cones of the cycad Zamia L. (Cycadales) in Panama, with descriptions of five new species". Insecta Mundi: 3, 6. ISSN 1942-1354.
  • Dioon holmgrenii, Tropicos
  • Media related to Dioon holmgrenii at Wikimedia Commons
  • Data related to Dioon holmgrenii at Wikispecies