Pachycereus is a genus of 9–12 species of large cacti native to Mexico and just into southern Arizona, United States. They form large shrubs or small trees up to 15 m tall, with stout stems up to 1 m in diameter. Pachycereus comes from the ancient Greek παχύς (pachys) meaning "thick" and the Latin cereus meaning "torch".

Pachycereus
Baja California, Mexico
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Order:	Caryophyllales
Family:	Cactaceae
Subfamily:	Cactoideae
Tribe:	Echinocereeae
Genus:	Pachycereus (A.Berger) Britton & Rose
Type species
Pachycereus pringlei
Species
See text.

Species

Image	Scientific name	Common Name	Distribution
	Pachycereus fulviceps (F.A.C.Weber ex K.Schum.) D.R.Hunt		Mexico
	Pachycereus gatesii (M.E.Jones) D.R.Hunt		Mexico (Baja California Sur)
	Pachycereus gaumeri Britton & Rose		Morelos, Puebla - Mexico
	Pachycereus grandis Rose		Mexico (México State, Morelos, Oaxaca, Puebla)
	Pachycereus hollianus (F.A.C.Weber ex J.M.Coult.) Buxb.		Mexico (Oaxaca, Puebla)
	Pachycereus lepidanthus (Eichlam) Britton & Rose		Guatemala; Honduras
	Pachycereus militaris (Audot) D.R.Hunt		Colima, Guerrero, Jalisco and Michoacán states of México
	Pachycereus pecten-aboriginum (Engelm. ex S.Watson) Britton & Rose	Indian comb	Mexico
	Pachycereus pringlei (S.Watson) Britton & Rose	cardón cactus	states of Baja California, Baja California Sur, and Sonora Mexico
	Pachycereus tepamo Gama & S.Arias		Mexico (Michoacán)
	Pachycereus weberi (J.M.Coult.) Backeb.		Mexico (Guerrero, Oaxaca, Puebla)

P. pringlei is the tallest cactus species in the world, with a maximum recorded height of 19.2 m.[1]

Synonymy

These genera have been brought into synonymy with Pachycereus, although this is not always maintained:

• Backebergia Bravo
• Lemaireocereus Britton & Rose
• Lophocereus (A.Berger) Britton & Rose
• Marginatocereus (Backeb.) Backeb.
• Mitrocereus (Backeb.) Backeb.
• Pterocereus T.MacDoug. & Miranda

References

External links

• Media related to Pachycereus at Wikimedia Commons
• Data related to Pachycereus at Wikispecies
• Flora of North America: Pachycereus
• Cacti Guide: Pachycereus
• photos on www.AIAPS.org

На других языках

[es] Pachycereus