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Guardiola odontophylla is a rare North American species of plants in the sunflower family. It is found only in northern Mexico in the state of Durango.
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
Guardiola odontophylla Wikipedia(Text) CC BY-SA