''Guardiola odontophylla'' is a rare North American species of plants in the family

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. It is found only in northern Mexico in the state of

Durango Durango, officially the Free and Sovereign State of Durango, is one of the 31 states which make up the Political divisions of Mexico, 32 Federal Entities of Mexico, situated in the northwest portion of the country. With a population of 1,832,650 ...

.Robinson, Benjamin Lincoln. 1899. Bulletin of the Torrey Botanical Club 26: 234
/ref> ''Guardiola odontophylla'' is a branching perennial with a purple stem, hairless and appearing whitish because of a waxy coating. Flower heads have both ray flowers and disc flowers.

References

odontophylla Flora of Durango Plants described in 1899 {{Millerieae-stub