''Agave salmiana'' var. ''ferox'' (''Agave ferox'') is a variety of the

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

'' Agave salmiana'' belonging to the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

Agave ''Agave'' (; ; ) is a genus of monocots native to the hot and arid regions of the Americas and the Caribbean, although some ''Agave'' species are also native to tropical areas of North America, such as Mexico. The genus is primarily known for ...

'' and the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Asparagaceae. It is very close to the typical subspecies in terms of description and culture. It is differentiated by even thicker and stiffer leaves, a terminal sting (up to 8 cm) and even sharper lateral spines. This is also what earned it its name.

References

salmiana var. ferox Flora of Mexico Plants described in 1860 {{Asparagaceae-stub