Visitors

Visitors are welcome. Access to research collections and the specimen database is available on a specific request and approval basis.  Please contact one of the curators, collection managers, or the Director, by phone, email or letter. See Staff page. 

See the Herbarium Library page for information on hours and policies.

Species Focus:
Echinocereus triglochidiatus

Claret Cup Cactus


Cacti are among the world’s most drought tolerant plants, and this spiny clump growing on bare rock in northern Arizona illustrates this. The thick stems store water and allow the plants to survive long droughts while the thorns effectively prevent most animals from eating them. 

photo (A.A. Reznicek)