Do you mean the plant's scientific name?
Its Yucca brevifolia Engelmann. It is also found in California, Nevada and
Other shrubby to tree-like Yuccas found in the Arizona desert are Yucca
elata Engelmann, Yucca schidigera Roezl ex Ortgies and Yucca schottii
Martin <m.wodak at htm-sports.com> wrote in article
<7np0rc$oap$1 at fleetstreet.Austria.EU.net>...
> Does anybody know the botanical expression for Joshua Tree (these are the
> trees that grow in the desert of Arizona)?